Niggas, A., Aumayr, F., & Wilhelm, R. A. (2025). Trajectory-dependent highly charged ion-induced electron yield from single-layer graphene. Physica Scripta, 100(1), 1–7. https://doi.org/10.1088/1402-4896/ad94af ( reposiTUm)

Werl, M., Koller, T., Haidegger, P., Wrathall, S., Eßletzbichler, L., Niggas, A., Aumayr, F., Tökési, K., & Wilhelm, R. A. (2025). Lifetime of a freely decaying hollow atom. Physical Review Research (PRResearch), 7(1), Article 013176. https://doi.org/10.1103/PhysRevResearch.7.013176 ( reposiTUm)

Nastran, M., Peschek, P., Walendzik, I., Rath, J., Fickl, B., Schubert, J. S., Ipsmiller, W., Bartl, A., Mauschitz, G., Szabo, G., Wilhelm, R. A., Schmidt, J., Eder, D., & Bayer, B. C. (2025). Liquid phase exfoliation of graphene using ammonia as an easy-to-remove additive in low-boiling organic-water co-solvent suspensions. Communications Chemistry, 8(1). https://doi.org/10.1038/s42004-025-01517-y ( reposiTUm)

Niggas, A., Werl, M., Aumayr, F., & Wilhelm, R. A. (2024). Charge exchange of slow highly charged ions from an electron beam ion trap with surfaces and 2D materials. Journal of Physics B: Atomic, Molecular and Optical Physics, 57, Article 072001. https://doi.org/10.1088/1361-6455/ad2e2a ( reposiTUm)

Assink, L., Brötzner, J., Cupak, C., Salverda, M., Jonkman, H. T., Versolato, O. O., Wilhelm, R. A., & Hoekstra, R. (2024). On the question whether surface roughness can explain the absence of a prominent single-collision peak in keV heavy-ion scattering off a polycrystalline Ru surface. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 554, Article 165442. https://doi.org/10.1016/j.nimb.2024.165442 ( reposiTUm)

Thima, D., Niggas, A., Werl, M., Szabo, G., Laux, P., Schmidt, M., Zschornack, G., Aumayr, F., & Wilhelm, R. A. (2024). A compact electron beam ion source for highly charged ion experiments at large-scale user facilities. Journal of Physics B: Atomic, Molecular and Optical Physics, 57(16), 1–7. https://doi.org/10.1088/1361-6455/ad6384 ( reposiTUm)

Chirita-Mihaila, M. C., Szabo, G., Redl, A., Goldberger, M., Niggas, A., & Wilhelm, R. A. (2024). Generation of ultrashort ion pulses from ultrafast electron-stimulated desorption. Physical Review Research (PRResearch), 6(3), L0320661–L0320668. https://doi.org/10.1103/PhysRevResearch.6.L032066 ( reposiTUm)

Niggas, A., Fischer, L., Kretschmer, S., Werl, M., Biber, H., Speckmann, C., McEvoy, N., Kotakoski, J., Aumayr, F., Krasheninnikov, A. V., & Wilhelm, R. A. (2023). Charge-exchange-dependent energy loss of H and He in freestanding monolayers of graphene and MoS₂. Physical Review A, 108(6), 0628231–0628238. https://doi.org/10.1103/PhysRevA.108.062823 ( reposiTUm)

Wilhelm, R. A., Deuzeman, M. J., Rai, S., Husinsky, W., Szabo, P. S., Biber, H. A., Stadlmayr, R., Cupak, C., Hundsbichler, J., Lemell, C., Möller, W., Mutzke, A., Hobler, G., Versolato, O. O., Aumayr, F., & Hoekstra, R. (2023). On the missing single collision peak in low energy heavy ion scattering. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 544, Article 165123. https://doi.org/10.1016/j.nimb.2023.165123 ( reposiTUm)

Szabo, G., Jany, B. R., Muckenhuber, H., Niggas, A., Lehner, M., Janas, A., Szabo, P., Gan, Z., George, A., Turchanin, A., Krok, F., & Wilhelm, R. A. (2023). Charge-State-Enhanced Ion Sputtering of Metallic Gold Nanoislands. Small, Article 2207263. https://doi.org/10.1002/smll.202207263 ( reposiTUm)

Dergham, P., Aumayr, F., Lamour, E., Macé, S., Prigent, C., Steydli, S., Vernhet, D., Werl, M., Wilhelm, R. A., & Trassinelli, M. (2022). Toward Probing Surface Magnetism with Highly Charged Ions. Atoms, 10(4), 1511–1516. https://doi.org/10.3390/atoms10040151 ( reposiTUm)

Ishikawa, N., Fujimura, Y., Kondo, K., Szabo, G. L., Wilhelm, R. A., Ogawa, H., & Taguchi, T. (2022). Surface nanostructures on Nb-doped SrTiO₃ irradiated with swift heavy ions at grazing Incidence. Nanotechnology, 33(23), 235303. https://doi.org/10.1088/1361-6528/ac58a5 ( reposiTUm)

Wilhelm, R. A. (2022). The charge exchange of slow highly charged ions at surfaces unraveled with freestanding 2D materials. Surface Science Reports, 77(4), 1–32. https://doi.org/10.1016/j.surfrep.2022.100577 ( reposiTUm)

Szabo, P. S., Weichselbaum, D., Biber, H., Cupak, C., Mutzke, A., Wilhelm, R. A., & Aumayr, F. (2022). Graphical user interface for SDTrimSP to simulate sputtering, ion implantation and the dynamic effects of ion irradiation. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 522, 47–53. https://doi.org/10.1016/j.nimb.2022.04.008 ( reposiTUm)

Grossek, A. S., Niggas, A., Wilhelm, R. A., Aumayr, F., & Lemell, C. (2022). Model for Nanopore Formation in Two-Dimensional Materials by Impact of Highly Charged Ions. Nano Letters, 22(23), 9679–9684. https://doi.org/10.1021/acs.nanolett.2c03894 ( reposiTUm)

Niggas, A., Schwestka, J., Balzer, K., Weichselbaum, D., Schlünzen, N., Heller, R., Creutzburg, S., Inani, H., Tripathi, M., Speckmann, C., McEvoy, N., Susi, T., Kotakoski, J., Gan, Z., George, A., Turchanin, A., Bonitz, M., Aumayr, F., & Wilhelm, R. A. (2022). Ion-Induced Surface Charge Dynamics in Freestanding Monolayers of Graphene and MoS2 Probed by the Emission of Electrons. Physical Review Letters, 129(8), 086802-1-086802–086809. https://doi.org/10.1103/PhysRevLett.129.086802 ( reposiTUm)

Neumann, C., Wilhelm, R. A., Küllmer, M., & Turchanin, A. (2021). Low-energy electron irradiation induced synthesis of molecular nanosheets: An influence of the electron beam energy. Faraday Discussions, 227, 61–79. https://doi.org/10.1039/c9fd00119k ( reposiTUm)

Cupak, C., Szabo, P. S., Biber, H., Stadlmayr, R., Grave, C., Fellinger, M., Brötzner, J., Wilhelm, R. A., Möller, W., Mutzke, A., Moro, M. V., & Aumayr, F. (2021). Sputter yields of rough surfaces: Importance of the mean surface inclination angle from nano- to microscopic rough regimes. Applied Surface Science, 570(151204), 151204. https://doi.org/10.1016/j.apsusc.2021.151204 ( reposiTUm)

Creutzburg, S., Mergl, M., Hübner, R., Jirka, I., Erb, D., Heller, R., Niggas, A., Grande, P. L., Aumayr, F., Wilhelm, R. A., Kalbac, M., & Facsko, S. (2021). Fluorination of graphene leads to susceptibility for nanopore formation by highly charged ion impact. Physical Review Materials, 5(074007). https://doi.org/10.1103/physrevmaterials.5.074007 ( reposiTUm)

Niggas, A., Creutzburg, S., Schwestka, J., Wöckinger, B., Gupta, T., Grande, P. L., Eder, D., Marques, J. P., Bayer, B. C., Aumayr, F., Bennett, R., & Wilhelm, R. A. (2021). Peeling graphite layer by layer reveals the charge exchange dynamics of ions inside a solid. Communications Physics, 4(180). https://doi.org/10.1038/s42005-021-00686-1 ( reposiTUm)

Creutzburg, S., Niggas, A., Weichselbaum, D., Grande, P. L., Aumayr, F., & Wilhelm, R. A. (2021). Angle-dependent charge exchange and energy loss of slow highly charged ions in freestanding graphene. Physical Review A, 104(042806). https://doi.org/10.1103/physreva.104.042806 ( reposiTUm)

Szabo, G. L., Lehner, M., Bischoff, L., Pilz, W., Muckenhuber, H., Kentsch, U., Aumayr, F., Klinger, N., & Wilhelm, R. (2021). Nano-hillock formation on CaF₂ due to individual slow Au-cluster impacts. Nanotechnology, 32(35), 355701. https://doi.org/10.1088/1361-6528/ac037e ( reposiTUm)

Wilhelm, R. A. (2021). Hohe Ladung trifft dünne Schicht. Physik Journal, 20, 64–67. http://hdl.handle.net/20.500.12708/137866 ( reposiTUm)

Fuchs, D., Bayer, B. C., Gupta, T., Szabo, G. L., Wilhelm, R. A., Eder, D., Meyer, J. C., Steiner, S., & Gollas, B. (2020). Electrochemical Behavior of Graphene in a Deep Eutectic Solvent. ACS Applied Materials and Interfaces, 12(36), 40937–40948. https://doi.org/10.1021/acsami.0c11467 ( reposiTUm)

Niggas, A., Schwestka, J., Creutzburg, S., Gupta, T., Eder, D., Bayer, B. C., Aumayr, F., & Wilhelm, R. A. (2020). The role of contaminations in ion beam spectroscopy with freestanding 2D materials: a study on thermal treatment. The Journal of Chemical Physics, 153(1), 014702. https://doi.org/10.1063/5.0011255 ( reposiTUm)

Stadlmayr, R., Szabo, P. S., Mayer, D., Cupak, C., Dittmar, T., Bischoff, L., Möller, S., Rasiński, M., Wilhelm, R. A., Möller, W., & Aumayr, F. (2020). Sputtering of Nanostructured Tungsten and Comparison to Modelling with TRI3DYN. Journal of Nuclear Materials, 532(152019), 152019. https://doi.org/10.1016/j.jnucmat.2020.152019 ( reposiTUm)

Wilhelm, R. A. (2020). On the highly charged ion transmission spectroscopy applied to 2D materials. Journal of Physics: Conference Series, 1412(6), 062010. https://doi.org/10.1088/1742-6596/1412/6/062010 ( reposiTUm)

Creutzburg, S., Schwestka, J., Niggas, A., Inani, H., Tripathi, M., George, A., Heller, R., Kozubek, R., Madauß, L., McEvoy, N., Facsko, S., Kotakoski, J., Schleberger, M., Turchanin, A., Grande, P. L., Aumayr, F., & Wilhelm, R. A. (2020). Vanishing influence of the band gap on charge exchange of slow highly charged ions in freestanding-single layer MoS₂. Physical Review B, 102(4), Article 045408. https://doi.org/10.1103/physrevb.102.045408 ( reposiTUm)

Stadlmayr, R., Szabo, P. S., Biber, H., Koslowski, H. R., Kadletz, E., Cupak, C., Wilhelm, R. A., Schmid, M., Linsmeier, C., & Aumayr, F. (2020). A high temperature dual-mode quartz crystal microbalance technique for erosion and thermal desorption spectroscopy measurements. Review of Scientific Instruments, 91(12), 125104. https://doi.org/10.1063/5.0012028 ( reposiTUm)

Schwestka, J., Inani, H., Tripathi, M., Niggas, A., McEvoy, N., Libisch, F., Aumayr, F., Kotakoski, J., & Wilhelm, R. A. (2020). Atomic-Scale Carving of Nanopores into a van der Waals Heterostructure with Slow Highly Charged Ions. ACS Nano, 14(8), 10536–10543. https://doi.org/10.1021/acsnano.0c04476 ( reposiTUm)

Kozubek, R., Tripathi, M., Ghorbani-Asl, M., Kretschmer, S., Madauß, L., Pollmann, E., O’Brien, M., McEvoy, N., Ludacka, U., Susi, T., Duesberg, G. S., Wilhelm, R. A., Krasheninnikov, A. V., Kotakoski, J., & Schleberger, M. (2019). Perforating Freestanding Molybdenum Disulfide Monolayers with Highly Charged Ions. Journal of Physical Chemistry Letters, 10(5), 904–910. https://doi.org/10.1021/acs.jpclett.8b03666 ( reposiTUm)

Schwestka, J., Niggas, A., Creutzburg, S., Kozubek, R., Heller, R., Schleberger, M., Wilhelm, R. A., & Aumayr, F. (2019). Charge-exchange-driven low-energy electron splash induced by heavy ion impact on condensed matter. Journal of Physical Chemistry Letters, 10(17), 4805–4811. https://doi.org/10.1021/acs.jpclett.9b01774 ( reposiTUm)

Wilhelm, R. A., & Grande, P. L. (2019). Unraveling energy loss processes of low energy heavy ions in 2D materials. Communications Physics, 2(89). https://doi.org/10.1038/s42005-019-0188-7 ( reposiTUm)

El-Said, A. S., Wilhelm, R. A., Heller, R., & Facsko, S. (2019). Creation of surface nanostructures in lanthanum fluoride single crystals by irradiation with slow highly charged ions. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 460, 137–140. https://doi.org/10.1016/j.nimb.2019.01.007 ( reposiTUm)

Aumayr, F., Ueda, K., Sokell, E., Schippers, S., Sadeghpour, H., Merkt, F., Gallagher, T. F., Dunning, F. B., Scheier, P., Echt, O., Kirchner, T., Fritzsche, S., Surzhykov, A., Ma, X., Rivarola, R., Fojon, O., Tribedi, L., Lamour, E., Crespo López-Urrutia, J. R., … Stöhlker, T. (2019). Roadmap on photonic, electronic and atomic collision physics: III. Heavy particles: with zero to relativistic speeds. Journal of Physics B: Atomic, Molecular and Optical Physics, 52(17), 171003. https://doi.org/10.1088/1361-6455/ab26ea ( reposiTUm)

Schwestka, J., Melinc, D., Heller, R., Niggas, A., Leonhartsberger, L., Winter, H., Facsko, S., Aumayr, F., & Wilhelm, R. A. (2018). A versatile ion beam spectrometer for studies of ion interaction with 2D materials. Review of Scientific Instruments, 89(8), 085101. https://doi.org/10.1063/1.5037798 ( reposiTUm)

Schwestka, J., Wilhelm, R. A., Gruber, E., Heller, R., Kozubek, R., Schleberger, M., Facsko, S., & Aumayr, F. (2018). The role of radiative de-excitation in the neutralization process of highly charged ions interacting with a single layer of graphene. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 422, 63–67. https://doi.org/10.1016/j.nimb.2018.02.022 ( reposiTUm)

Wilhelm, R., Gruber, E., Schwestka, J., Heller, R., Fascko, S., & Aumayr, F. (2018). Neutralization dynamics of slow highly charged ions in 2D materials. APPLIED SCIENCES-BASEL, 8(7), 1050. https://doi.org/10.3390/app8071050 ( reposiTUm)

Wilhelm, R. A., Gruber, E., Schwestka, J., Kozubek, R., Madeira, T. I., Marques, J. P., Kobus, J., Krasheninnikov, A. V., Schleberger, M., & Aumayr, F. (2017). Interatomic Coulombic Decay - the mechanism for rapid de-excitation of hollow atoms. Physical Review Letters, 119(103401). https://doi.org/10.1103/physrevlett.119.103401 ( reposiTUm)

El-Said, A. S., Wilhelm, R. A., Heller, R., Sorokin, M., Facsko, S., & Aumayr, F. (2016). Tuning the fabrication of nanostructures by low-energy highly charged ions. Physical Review Letters, 117(126101). https://doi.org/10.1103/physrevlett.117.126101 ( reposiTUm)

Wilhelm, R. A., Gruber, E., Smejkal, V., Facsko, S., & Aumayr, F. (2016). Charge-state-dependent energy loss of slow ions. I. Experimental results on the transmission of highly charged ions. Physical Review A, 93(052708). https://doi.org/10.1103/physreva.93.052708 ( reposiTUm)

Gruber, E., Wilhelm, R., Pétuya, R., Smejkal, V., Kozubek, R., Hierzenberger, A., Bayer, B. C., Aldazabal, I., Kazansky, A. K., Libisch, F., Krasheninnikov, A. V., Schleberger, M., Facsko, S., Borisov, A. G., Arnau, A., & Aumayr, F. (2016). Ultrafast electronic response of graphene to a strong and localized electric field. Nature Communications, 7, Article 13948. https://doi.org/10.1038/ncomms13948 ( reposiTUm)

Gruber, E., Wilhelm, R. A., Smejkal, V., Heller, R., Facsko, S., & Aumayr, F. (2015). Interaction of highly charged ions with carbon nano membranes. Journal of Physics: Conference Series, 635(1), 012027. https://doi.org/10.1088/1742-6596/635/1/012027 ( reposiTUm)

Wilhelm, R. A., Gruber, E., Ritter, R., Heller, R., Beyer, A., Turchanin, A., Klingner, N., Hübner, R., Stöger-Pollach, M., Vieker, H., Hlawacek, G., Gölzhäuser, A., Facsko, S., & Aumayr, F. (2015). Threshold and efficiency for perforation of 1 nm thick carbon nanomembranes with slow highly charged ions. 2D Materials, 2, 0350091–0350096. http://hdl.handle.net/20.500.12708/150959 ( reposiTUm)

Wilhelm, R. A., El-Said, A. S., Krok, F., Heller, R., Gruber, E., Aumayr, F., & Facsko, S. (2015). Highly charged ion induced nanostructures at surfaces by strong electronic excitations. Progress in Surface Science, 90, 377–395. http://hdl.handle.net/20.500.12708/150957 ( reposiTUm)

Wilhelm, R. A., Gruber, E., Ritter, R., Heller, R., Facsko, S., & Aumayr, F. (2014). Charge Exchange and Energy Loss of Slow Highly Charged Ions in 1 nm Thick Carbon Nanomembranes. Physical Review Letters, 112, 1532011–1532015. http://hdl.handle.net/20.500.12708/156541 ( reposiTUm)

El-Said, A. S., Heller, R., Wilhelm, R. A., Facsko, S., & Aumayr, F. (2014). Surface modifications of BaF₂ and CaF₂ single crystals by slow highly charged ions. Applied Surface Science, 310, 169–173. http://hdl.handle.net/20.500.12708/156698 ( reposiTUm)

El-Said, A. S., Wilhelm, R. A., Heller, R., Ritter, R., Wachter, G., Facsko, S., Lemell, C., Burgdörfer, J., & Aumayr, F. (2014). Nanostructuring CaF₂ surfaces with slow highly charged ions. Journal of Physics: Conference Series, 488(1), 012002. https://doi.org/10.1088/1742-6596/488/1/012002 ( reposiTUm)

Wachter, G., Tökési, K., Betz, G., Lemell, C., Burgdörfer, J., El-Said, A. S., Wilhelm, R. A., Heller, R., Facsko, S., Ritter, R., & Aumayr, F. (2014). Nano-structuring of CaF2 surfaces by slow highly charged ions: simulation and experiment. Journal of Physics: Conference Series, 488(13), 132015. https://doi.org/10.1088/1742-6596/488/13/132015 ( reposiTUm)

Ritter, R., Shen, Q., Wilhelm, R. A., Heller, R., Ginzel, R., Crespo López-Urrutia, J. R., Facsko, S., Teichert, C., & Aumayr, F. (2013). Novel aspects on the irradiation of HOPG surfaces with slow highly charged ions. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 315, 252–256. http://hdl.handle.net/20.500.12708/155424 ( reposiTUm)

Ritter, R., Wilhelm, R. A., Stöger-Pollach, M., Heller, R., Mücklich, A., Werner, U., Vieker, H., Beyer, A., Facsko, S., Gölzhäuser, A., & Aumayr, F. (2013). Fabrication of nanopores in 1 nm thick carbon nanomembranes with slow highly charged ions. Applied Physics Letters, 102(6), Article 063112. https://doi.org/10.1063/1.4792511 ( reposiTUm)

Ritter, R., Wilhelm, R. A., Ginzel, R., Schadauer, P., Heller, R., Rupp, W., López-Urrutia, J. R. C., Facsko, S., & Aumayr, F. (2013). Effect of chemical etching on poly (methyl methacrylate) irradiated with slow highly charged ions. Physica Scripta, T156, 014065. https://doi.org/10.1088/0031-8949/2013/t156/014065 ( reposiTUm)

El-Said, A. S., Wilhelm, R. A., Heller, R., Facsko, S., Lemell, C., Wachter, G., Burgdörfer, J., Ritter, R., & Aumayr, F. (2012). Phase Diagram for Nanostructuring CaF₂ Surfaces by Slow Highly Charged Ions. Physical Review Letters, 109(11), Article 117602. https://doi.org/10.1103/physrevlett.109.117602 ( reposiTUm)

Ritter, R., Wilhelm, R. A., Ginzel, R., Kowarik, G., Heller, R., El-Said, A. S., Papaléo, R. M., Rupp, W., Crespo López-Urrutia, J. R., Ullrich, J., Facsko, S., & Aumayr, F. (2012). Pit formation on poly(methyl methacrylate) due to ablation induced by individual slow highly charged ion impact. EPL, 97(1), 13001. https://doi.org/10.1209/0295-5075/97/13001 ( reposiTUm)

Ritter, R., Kowarik, G., Ginzel, R., Wilhelm, R., Heller, R., Papaléo, R. M., Rupp, W., Crespo López-Urrutia, J. R., Ullrich, J., Fascko, S., & Aumayr, F. (2012). Nano-craters due to impact of individual highly charged ions on surfaces and thin films. Journal of Physics: Conference Series, 388(13), 132028. https://doi.org/10.1088/1742-6596/388/13/132028 ( reposiTUm)

El-Said, A. S., Wilhelm, R. A., Heller, R., Facsko, S., Trautmann, C., & Aumayr, F. (2011). Surface nanostructuring of SrTiO_{3} single crystals by slow highly charged ions and swift heavy ions. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 269(11), 1234–1237. https://doi.org/10.1016/j.nimb.2010.10.020 ( reposiTUm)

Facsko, S., Meissl, W., Heller, R., Wilhelm, R., El-Said, A. S., Kowarik, G., Ritter, R., & Aumayr, F. (2009). Nanostructures induced by highly charged ions on CaF₂ and KBr. Journal of Physics: Conference Series, 194, 0120601–0120608. http://hdl.handle.net/20.500.12708/166411 ( reposiTUm)

Niggas, A., Vojtech, V., Wilhelm, R. A., & Aumayr, F. (2025). What can be learnt from electrons emitted or captured during highly charged ion transmission through 2D Materials? In A. Arnau & P. M. Echenique (Eds.), 3S´25. Symposium on Surface Science 2025. Contributions (pp. 89–89). ( reposiTUm)

Niggas, A., Probst, D., Ravindran, N., Kofler, C., Speckmann, C., Vukovic, F., Grossek, A. S., Lemell, C., Aumayr, F., Susi, T., Kotakoski, J., & Wilhelm, R. A. (2025). Nanostructuring Of 2D Materials Using Slow Highly Charged Ions. In Defect-Mediated Engineering of Nanomaterials for Energy and Quantum Applications : Beilstein Nanotechnology Symposium 2025 : Book of Abstracts (pp. 66–67). ( reposiTUm)

Wilhelm, R. A., Niggas, A., Bruck, J., Thima, D., Vojtech, V., Vukovic, F., Werl, M., & Rossnagel, K. (2025). Chirality switching in 1T -TaS2 induced by highly charged ion irradiation. In Defect-mediated engineering of nanomaterials for energy and quantum applications : Beilstein Nanotechnology Symposium 2025 : Book of Abstracts (pp. 17–18). ( reposiTUm)

Vukovic, F., Niggas, A., Ehrens, J., Mihlan, L., Schnack, J., Marks, N., & Wilhelm, R. A. (2025). Revealing the atomistic structure of carbon  nanomembranes: molecular dynamics simulations and experiments with highly charged ions. In Defect-Mediated Engineering of Nanomaterials for Energy and Quantum Applications : Beilstein Nanotechnology Symposium 2025 : Book of Abstracts (pp. 59–60). ( reposiTUm)

Wilhelm, R. A., Niggas, A., Vukovic, F., Grossek, A., Lemell, C., & Aumayr, F. (2024). On the interaction of slow highly charged ions with 2D materials. In 21st Highly Charged Ions Conference: Book of Abstracts. 21st International Highly Charged Ions Conference (HCI-21), Egmond aan Zee, Netherlands (the). ( reposiTUm)

Niggas, A., Werl, M., Vojtech, V., Vukovic, F., Aumayr, F., & Wilhelm, R. A. (2024). Highly-charged-ion-induced electron emission from surfaces. In Book of Abstracts: The 15th International Symposium Electron Beam Ion Sources and Traps (EBIST 2024) (pp. 13–13). ( reposiTUm)

Niggas, A., Vukuovic Filip, Aumayr, F., & Wilhelm, R. A. (2024). Charge Exchange of Highly Charged Ions in 2D Materials. In 73rd Annual Meeting of the Austrian Physical Society: ÖPG Tagungsband Nr. 73 (pp. 126–126). http://hdl.handle.net/20.500.12708/201607 ( reposiTUm)

Thima, D., Niggas, A., Werl, M., Szabo, G., Laux, P., Schmidt, M., Zschornack, G., Aumayr, F., & Wilhelm, R. A. (2024). A compact electron beam ion source for highly charged ion experiments at remote large-scale user facilities. In 21st Highly Charged Ions Conference: Book of Abstracts (pp. 56–56). http://hdl.handle.net/20.500.12708/200407 ( reposiTUm)

Grossek, A. S., Niggas, A., Wilhelm, R. A., Aumayr, F., & Lemell, C. (2024). Model for Nanopore Formation in Two-Dimensional Materials by Impact of Highly Charged Ions. In 3S’24 : Symposium on Surface Science 2024 (pp. 125–126). https://doi.org/10.34726/8459 ( reposiTUm)

Niggas, A., Thima Daniel, Werl, M., Buck, J., Simperl, F., Blödorn, F., Rossnagel, K., Werner, W., Aumayr, F., & Wilhelm, R. A. (2024). On the low-energy secondary electron emission from surfaces. In 3S’24: Symposium on Surface Science 2024: Contributions (pp. 139–140). http://hdl.handle.net/20.500.12708/196110 ( reposiTUm)

Niggas, A., Thima Daniel, Vukovic, F., Vojtech, V., Werl, M., Buck, J., Eisenmenger-Sittner, C., Aumayr, F., Lemell, C., Rossnagel, K., & Wilhelm, R. A. (2024). Angle- and Energy-Resolved Spectroscopy of Electrons Emitted from Surfaces by Impact of Slow Highly Charged Ions. In 21st Highly Charged Ions Conference: Book of Abstracts. 21st International Highly Charged Ions Conference (HCI-21), Egmond aan Zee, Netherlands (the). http://hdl.handle.net/20.500.12708/200408 ( reposiTUm)

Niggas, A., Werl, M., & Wilhelm, R. A. (2023). Neutralisation of highly charged ions at surfaces. In 21st Atomic Processes in Plasmas Conference (pp. 104–104). ( reposiTUm)

Wilhelm, R. A., Niggas, A., Aumayr, F., & Kotakoski, J. (2023). Extended defect production in 2D materials by the impact of individual slow highly charged ions. In Defects in Two-dimensional Materials - 750. WE-Heraeus-Seminar (pp. 50–50). http://hdl.handle.net/20.500.12708/177578 ( reposiTUm)

Niggas, A., Schwestka, J., Weichselbaum, D., Heller, R., Aumayr, F., & Wilhelm, R. A. (2022). Coincidence technique to study ion-induced electron emission from atomically thin materials. In Nanophotonics IX. Proc. of SPIE. https://doi.org/10.1117/12.2624402 ( reposiTUm)

Niggas, A., Weichselbaum, D., Aumayr, F., & Wilhelm, R. A. (2022). Energy distribution of electrons emitted from atomically thin materials due to highly charged ion impact. In 3S*22 Symposium on Surface Science 2022 , St. Christoph am Arlberg, Austria, March 13 - 19, 2022 (editors: F. Aumayr, U. Diebold, and C. C. Lemell) (pp. 161–162). http://hdl.handle.net/20.500.12708/45048 ( reposiTUm)

Wilhelm, R. A., Niggas, A., Werl, M., & Aumayr, F. (2022). Ion charge exchange spectroscopy with 2D materials. In 3S*22 Symposium on Surface Science 2022 , St. Christoph am Arlberg, Austria, March 13 - 19, 2022 (editors: F. Aumayr, U. Diebold, and C. C. Lemell) (pp. 145–146). http://hdl.handle.net/20.500.12708/45050 ( reposiTUm)

Szabo, G. L., Lehner, M., Bischoff, L., Pilz, W., Kentsch, U., Aumayr, F., Klingner, N., & Wilhelm, R. A. (2021). Nano-hillock formation on CaF2 due to cluster-ion irradiation; invited talk. In Proc. of the XXV International Conference on Ion-Surface Interactions (ISI-2021), editors: E.Yu. Zykova, P.A. Karaseov, A.I. Titov, V.E. Yurasova, 23.-27.08.2021, Moscow/Russia, Vol.1; National Research University Higher School of Economics MEPh (pp. 49–53). http://hdl.handle.net/20.500.12708/45031 ( reposiTUm)

Niggas, A., Schwestka, J., Creutzburg, S., Weichselbaum, D., Vojtech, V., Grossek, A. S., Libisch, F., Lemell, C., Inani, H., George, A., Heller, R., McEvoy, N., Kotakoski, J., Turchanin, A., Aumayr, F., & Wilhelm, R. A. (2021). The interaction of highly charged ions with freestanding 2D materials; invited talk. In Proc. of the XXV International Conference on Ion-Surface Interactions (ISI-2021), editors: E.Yu. Zykova, P.A. Karaseov, A.I. Titov, V.E. Yurasova, 23.-27.08.2021, Moscow/Russia, Vol.2; National Research University Higher School of Economics MEPhi (pp. 182–185). http://hdl.handle.net/20.500.12708/45032 ( reposiTUm)

Niggas, A., Schwestka, J., Creutzburg, S., Gupta, T., Bayer-Skoff, B. C., Aumayr, F., & Wilhelm, R. A. (2020). How to clean a sample when sputtering is not possible because the sample has only one atomic layer? In Conference Proceedings 3S*20 "Symposium on Surface Science 2020 (pp. 129–130). http://hdl.handle.net/20.500.12708/45003 ( reposiTUm)

Schwestka, J., Niggas, A., Inani, H., Creutzburg, S., Kotakoski, J., Wilhelm, R. A., & Aumayr, F. (2020). Perforation of 2D heterostructures. In Conference Proceedings 3S*20 "Symposium on Surface Science 2020 (pp. 79–80). http://hdl.handle.net/20.500.12708/45001 ( reposiTUm)

Schwestka, J., Wilhelm, R. A., Creutzburg, S., Heller, R., Kouzubek, R., Schleberger, M., Facsko, S., & Aumayr, F. (2018). Interaction of highly charged ions with 2D materials. In Proceedings 3S*18 Symposium on Surface Science 2018, Symposium on Surface Science 2018 (3S*18) (pp. 129–130). http://hdl.handle.net/20.500.12708/44944 ( reposiTUm)

Schwestka, J., Gruber, E., Wilhelm, R. A., Smejkal, V., Melinc, D., Leonhartsberger, L., Kozubek, R., Hierzenberger, A., Schleberger, M., Facsko, S., & Aumayr, F. (2017). Interaction of highly charged ions with single layer graphene. In Proc. of the XXIII International Conference on Ion-Surface Interactions (ISI-2017), editors: E.Yu. Zykova, P.A. Karaseov, A.I. Titov, V.E. Yurasovam, 21.-25.08.2015, Moscow, Russia (pp. 21–25). National Research University Higher School of Economics. http://hdl.handle.net/20.500.12708/44906 ( reposiTUm)

Sorokin, M., El-Said, A. S., Wilhelm, R. A., Heller, R., Facsko, S., & Aumayr, F. (2017). Structuring of the lithium fluoride surface by highly charged ions. In Proc. of the XXIII International Conference on Ion-Surface Interactions (ISI-2017), editors: E.Yu. Zykova, P.A. Karaseov, A.I. Titov, V.E. Yurasovam, 21.-25.08.2015, Moscow, Russia, (pp. 64–66). National Research University Higher School of Economics. http://hdl.handle.net/20.500.12708/44909 ( reposiTUm)

Wilhelm, R. A., Schwestka, J., Gruber, E., Heller, R., Kozubek, R., Schleberger, M., Facsko, S., & Aumayr, F. (2017). Radiative and non-radiative de-excitation of slow highly charged ions transmitted through freestanding single layer graphene. In Proc. of the XXIII International Conference on Ion-Surface Interactions (ISI-2017), editors: E.Yu. Zykova, P.A. Karaseov, A.I. Titov, V.E. Yurasovam, 21.-25.08.2015, Moscow, Russia (pp. 24–26). National Research University Higher School of Economics. http://hdl.handle.net/20.500.12708/44910 ( reposiTUm)

Aumayr, F., Wilhelm, R. A., Gruber, E., Ritter, R., Heller, R., & Fascko, S. (2015). Transmission of slow highly charged ions through graphene and ultrathin carbon nanomembranes. In Transmission of slow highly charged ions through graphene and ultrathin carbon nanomembranes Les Arcs 1800, France March 22 - 28, 2015 (editors: F. Cheynis, S. Curiotto, F. Leroy, P. Müller) (pp. 30–31). Proc. Symposium on Surface Science 2015 (3S*15). http://hdl.handle.net/20.500.12708/44812 ( reposiTUm)

Gruber, E., Wilhelm, R. A., Heller, R., Smejkal, V., Ritter, R., Facsko, S., & Aumayr, F. (2014). Interaction of slow highly charged ions with carbon nano membranes. In Proc. 3S*14 Symposium on Surface Science 2014 (pp. 127–128). http://hdl.handle.net/20.500.12708/44772 ( reposiTUm)

El-Said, A. S., Wilhelm, R. A., Heller, R., Ritter, R., Wachter, G., Facsko, S., Lemell, C., Wilhelm, R. A., Heller, R., Facsko, S., Ritter, R., Burgdörfer, J., & Aumayr, F. (2014). Nano-structuring of CaF2 surfaces by slow highly charged ions: simulation and experiment. In Plenary lectures, progress reports and special reports. Journal of Physics: Conference Series. http://hdl.handle.net/20.500.12708/44776 ( reposiTUm)

Ritter, R., Wilhelm, R. A., Stöger-Pollach, M., Mücklich, A., Werner, W. S. M., Beyer, A., Fascko, S., Gölzhäuser, A., & Aumayr, F. (2013). Nanopores fabricated in 1nm thick carbon nanomembranes by slow highly charged ions. In Proc. 3S*13 Symposium on Surface Science 2013, Åre, Sweden (March 3 - 9, 2013) editors: J. Gustafson and E. Lundgren (pp. 133–134). Proc. Conf. Symp. on Surface Science 2013 (3S`13). http://hdl.handle.net/20.500.12708/44726 ( reposiTUm)

Aumayr, F., El-Said, A. S., Heller, R., Wilhelm, R., Wachter, G., Ritter, R., Facsko, S., Lemell, C., & Burgdörfer, J. (2012). Phase diagram for nanostructuring CaF2 surfaces by slow highly charged ions. In Conf. Proc. 3S*12 Symposium on Surface Science 2012 (pp. 129–130). http://hdl.handle.net/20.500.12708/44651 ( reposiTUm)

Heller, R., Meissl, W., Schrempf, D., Wilhelm, R. A., Winklehner, D., Facsko, S., & Aumayr, F. (2012). Electron emission statistics of slow highly charged ions during interaction with insulating surfaces. In Book of Abstracts, 16th International Conference on the Physics of Highly Charged Ions (HCI 2012) (p. 54). http://hdl.handle.net/20.500.12708/44664 ( reposiTUm)

Ritter, R., Wilhelm, R. A., Stöger-Pollach, M., Mücklich, A., Werner, U., Beyer, A., Facsko, S., Gölzhäuser, A., & Aumayr, F. (2012). Nanopores milled in carbon nanomembranes due to impact of individual slow highly charged ions. In Book of Abstracts, 16th International Conference on the Physics of Highly Charged Ions (HCI 2012) (p. 143). http://hdl.handle.net/20.500.12708/44666 ( reposiTUm)

Ritter, R., Wilhelm, R. A., Stöger-Pollach, M., Mücklich, A., Werner, U., Beyer, A., Facsko, S., Gölzhäuser, A., & Aumayr, F. (2012). Nano-holes milled in 1 nm thick carbon nanomembranes with slow highly charged ions. In Book of Abstracts, 19th International Workshop on Inelastic Ion-Surface Collisions (IISC-19) (p. 32). http://hdl.handle.net/20.500.12708/44668 ( reposiTUm)

Ritter, R., Wilhelm, R. A., Ginzel, R., Heller, R., Rupp, W., Crespo López-Urrutia, J. R., Facsko, S., & Aumayr, F. (2012). Ion beam lithography with slow highly charged ions. In Book of Abstracts, 16th International Conference on the Physics of Highly Charged Ions (HCI 2012) (p. 144). http://hdl.handle.net/20.500.12708/44667 ( reposiTUm)

Ritter, R., Shen, Q., Teichert, C., Wilhelm, R. A., Facsko, S., Ginzel, R., Crespo López-Urrutia, J. R., & Aumayr, F. (2012). Characterisation of nanostructures induced by slow highly charged ion bombardment of HOPG. In Book of Abstracts, ICACS-25 (p. 94). http://hdl.handle.net/20.500.12708/44682 ( reposiTUm)

Aumayr, F., Heller, R., Meissl, W., Schrempf, D., Wilhelm, R. A., Winklehner, D., & Facsko, S. (2012). Electron emission statistics of slow highly charged ions during interaction with insulating surfaces. In Book of Abstracts, ICACS-25 (p. 209). http://hdl.handle.net/20.500.12708/44684 ( reposiTUm)

Aumayr, F., El-Said, A. S., Wilhelm, R. A., Heller, R., Facsko, S., Lemell, C., Wachter, G., Burgdörfer, J., & Ritter, R. (2012). Phase diagram for nanostructuring CaF2 surfaces by slow highly charged ions. In Book of Abstracts, ICACS-25 (p. 184). http://hdl.handle.net/20.500.12708/44683 ( reposiTUm)

Facsko, S., Heller, R., Wilhelm, R., El-Said, A. S., Meissl, W., Kowarik, G., Ritter, R., & Aumayr, F. (2010). Surface nanostructures induced by slow highly charged ions. In Proc. 3S*10 Symposium on Surface Science 2010 (pp. 87–88). Symposium on Surface Science 2010 (3S10). http://hdl.handle.net/20.500.12708/44546 ( reposiTUm)

Wilhelm, R. A. (2024, April 11). Determining ultrafast surface charge dynamics on 2D materials by ion-electron coincidence spectroscopy [Presentation]. Physics Colloquium, Faculty of Physics, University of Groningen, Groningen, Netherlands (the). ( reposiTUm)

Wilhelm, R. A. (2024, May 17). Low energy electron emission from charge exchange of slow highly charged ions with solid surfaces [Presentation]. Fritz-Haber-Institut: MP Department Seminar (2024), Berlin, Germany. ( reposiTUm)

Nastran, M., Peschek, P., Walendzik, I., Rath, J., Fickl, B., Schubert, J. S., Szabo, G., Wilhelm, R. A., Schmidt, J., Eder, D., & Bayer-Skoff, B. (2024, June 24). High-yield liquid phase exfoliation of graphene utilizing low boiling co-solvent solutions and ammonia [Poster Presentation]. NT24, Cambridge, Boston, United States of America (the). http://hdl.handle.net/20.500.12708/203125 ( reposiTUm)

Redl, A., Chirita-Mihaila, M. C., Goldberger, M., Szabo, G., Pachlinger, C., Niggas, A., & Wilhelm, R. A. (2024, July 16). Using ultrafast electron-stimulated desorption to generate picosecond ion pulses [Poster Presentation]. 23rd International Conference on Ultrafast Phenomena, Barcelona, Spain. http://hdl.handle.net/20.500.12708/200020 ( reposiTUm)

Grossek, A. S., Niggas, A., Wilhelm, R. A., Aumayr, F., & Lemell, C. (2024, September 5). Nanopore formation in 2D materials by impact of slow HC [Poster Presentation]. 21st Highly Charged Ion Conference (HCI-21), Egmond aan Zee, Netherlands (the). http://hdl.handle.net/20.500.12708/207329 ( reposiTUm)

Wilhelm, R. A., Fellinger, M., & Brötzner, J. (2023, March 28). Graphical User Interface for BCA Codes (contributed talk) [Presentation]. fit4nano Workshop 2023 WG2 Meeting, Dresden, Germany. ( reposiTUm)

Wilhelm, R. A. (2023, May 24). Charge Exchange of Slow Heavy Ions at Surfaces [Presentation]. Physikalisches Kolloquium der TU Chemnitz, Chemnitz, Germany. ( reposiTUm)

Wilhelm, R. A., Niggas, A., & Aumayr, F. (2023, July 28). Can the ion charge state be observed while travelling within a solid? [Poster Presentation]. 33rd International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC), Ottawa, Canada. http://hdl.handle.net/20.500.12708/187858 ( reposiTUm)

Chirita-Mihaila, M. C., Szabo, G., Redl, A., Goldberger, M., & Wilhelm, R. A. (2023, July 31). Ultrafast electron-stimulated desorption to form ion pulses for time-resolved ion surface collision experiments [Poster Presentation]. 33rd International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC), Ottawa, Canada. http://hdl.handle.net/20.500.12708/187862 ( reposiTUm)

Wilhelm, R. A. (2023, March 14). Femtosecond charge dynamics at surfaces induced by highly charged ion impact and probed by the emission of electrons (talk) [Presentation]. CPG, Vortrag an der Universität Wien, Fakultät für Physik, Wien, Austria. http://hdl.handle.net/20.500.12708/175614 ( reposiTUm)

Wilhelm, R. A., Szabo, G., Jany, B. R., Niggas, A., Szabo, P., Turchanin, A., & Krok, F. (2023, September 13). Charge-state enhanced erosion of metallic gold nanoislands [Poster Presentation]. 24th International Workshop on Inelastic Ion-Surface Collisions ((IISC-24), Charleston, South Carolina, United States of America (the). http://hdl.handle.net/20.500.12708/188395 ( reposiTUm)

Wilhelm, R. A. (2023, November 6). Electronic sputtering of freestanding 2D materials by slow highly charged ion impact [Conference Presentation]. XXVI Conference of the AIV - Associazione Italiana di Scienza e Tecnologia, Rom, Italy. ( reposiTUm)

Wilhelm, R. A. (2023, November 23). Charge Exchange of Slow Heavy Ions at Surfaces [Presentation]. Institutsseminar Vinca Institute of Nuclear Physics 2023, Belgrad,, Serbia. ( reposiTUm)

Werl, M., Niggas, A., Koller, T., Haidegger, P., Tökési, K., Aumayr, F., & Wilhelm, R. A. (2023, July 28). A numerical approach to the deexcitation of a hollow atom [Poster Presentation]. 33rd International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC), Ottawa, Canada. http://hdl.handle.net/20.500.12708/187857 ( reposiTUm)

Wilhelm, R. A., Niggas, A., Werl, M., Thima, D., Bennett, R., Grande, P. L., & Aumayr, F. (2023, September 13). Charge exchange of slow heavy ions inside a solid [Poster Presentation]. 24th International Workshop on Inelastic Ion-Surface Collisions (IISC-24), Charleston, South Carolina, United States of America (the). http://hdl.handle.net/20.500.12708/188396 ( reposiTUm)

Werl, M., Koller, R., Haidegger, P., Niggas, A., Tőkési, K., Aumayr, F., & Wilhelm, R. A. (2023, September 13). The hollow atom formation and de-excitation simulation package [Conference Presentation]. 24th International Workshop on Inelastic Ion-Surface Collisions (IISC-24), Charleston, South Carolina, United States of America (the). http://hdl.handle.net/20.500.12708/188394 ( reposiTUm)

Fellinger, M., Redl, A., Szabo, P., Weichselbaum, D., Biber, H. A., Mutzke, A., Möller, W., Wilhelm, R. A., & Aumayr, F. (2023, October 9). BCA GUIDE – binary collision approximation graphical user interface for displaying and execution of simulations [Poster Presentation]. 26th International Conference on Ion Beam Analysis (IBA-2023)  18th International Conference on Particle Induced X-ray Emission (PIXE 2023), Toyama, Japan. http://hdl.handle.net/20.500.12708/189301 ( reposiTUm)

Niggas, A., Balzer, K., Aumayr, F., Bonitz, K., & Wilhelm, R. A. (2023, September 14). Charge carrier dynamics in 2D materials upon impact of highly charged ions probed by emitted electrons [Conference Presentation]. 24th International Workshop on Inelastic Ion-Surface Collisions (IISC-24), Charleston, South Carolina, United States of America (the). http://hdl.handle.net/20.500.12708/188531 ( reposiTUm)

Niggas, A., Werl, M., Thima Daniel, Aumayr, F., & Wilhelm, R. A. (2023, July 24). Electron energy distribution emitted from freestanding single-layer graphene upon impact of highly charged ions [Poster Presentation]. 2nd Symposium on Electron, Photon, and Ion Collisions on Molecular & Atomic  Nanostructures (EPIC-MAN 2), Ottawa, Canada. http://hdl.handle.net/20.500.12708/187929 ( reposiTUm)

Chirita-Mihaila, M. C., Szabo, G., Redl, A., Goldberger, M., Grossek, A., & Wilhelm, R. A. (2023, September 13). Generation of picosecond pulsed ions using ultrafast electrons [Poster Presentation]. AttoChem Young Scientist Symposium 2023, Wien, Austria. http://hdl.handle.net/20.500.12708/188564 ( reposiTUm)

Chirita-Mihaila, M. C., Szabo, G., Redl, A., Goldberger, M., & Wilhelm, R. A. (2023, September 12). Ultrafast ions for time-resolved ion surface collision experiments [Conference Presentation]. 24th International Workshop on Inelastic Ion-Surface Collisions (IISC-24), Charleston, South Carolina, United States of America (the). http://hdl.handle.net/20.500.12708/188377 ( reposiTUm)

Niggas, A., Werl, M., Thima, D., Bernhart, M., Aumayr, F., & Wilhelm, R. A. (2023, October 9). Charge exchange dynamics of slow highly charged ions [Presentation]. 26th International Conference on Ion Beam Analysis (IBA-2023)  18th International Conference on Particle Induced X-ray Emission (PIXE 2023), Toyama, Japan. http://hdl.handle.net/20.500.12708/189302 ( reposiTUm)

Wilhelm, R. A. (2022, December 13). Highly charged ions as a tool to probe surface charge dynamics under extreme conditions (invited talk) [Presentation]. Physikkolloquium, Kiel, Germany. ( reposiTUm)

Werl, M., Niggas, A., Tökési, K., Aumayr, F., & Wilhelm, R. (2022). A computational approach to the formation and free decay of hollow atoms. 29th International Conference on Atomic Collisions in Solids & 11th International Symposium on Swift Heavy Ions in Matter (ICACS-SHIM 2022), University of Helsinki, Finland. http://hdl.handle.net/20.500.12708/135755 ( reposiTUm)

Szabo, P., Weichselbaum, D., Biber, H., Cupak, C., Mutzke, A., Wilhelm, R., & Aumayr, F. (2022). A graphical user interface for SDTrimSP. 29th International Conference on Atomic Collisions in Solids & 11th International Symposium on Swift Heavy Ions in Matter (ICACS-SHIM 2022), University of Helsinki, Finland. http://hdl.handle.net/20.500.12708/135757 ( reposiTUm)

Wilhelm, R. A. (2022). Potential sputtering in freestanding van-der-Waals heterostructures; contributed talk. 29th International Conference on Atomic Collisions in Solids & 11th International Symposium on Swift Heavy Ions in Matter (ICACS-SHIM 2022), University of Helsinki, Finland. http://hdl.handle.net/20.500.12708/135754 ( reposiTUm)

Niggas, A., Werl, M., Aumayr, F., & Wilhelm, R. (2022). Correlated ion-electron energy and charge exchange spectroscopy following ion transmission through free-standing 2D materials. International Conference on Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces (MPS-2022), Turku, Finland. http://hdl.handle.net/20.500.12708/135744 ( reposiTUm)

Wilhelm, R. A. (2022, September 6). Slow highly charged ions as a tool for monolayer-sensitive nano-engineering (invited talk / prize talk) [Conference Presentation]. DPG Spring Meeting, Sektion Kondensierte Materi, Regensburg, Germany. ( reposiTUm)

Niggas, A., Balzer, K., Speckmann, C., Kotakoski, J., Bonitz, M., Aumayr, F., & Wilhelm, R. (2022). Electron emission from 2D materials induced by highly charged ions. 5th European Workshop on Epitaxial Graphene and 2D Materials (EWEG2D´22), St. Moritz, Switzerland. http://hdl.handle.net/20.500.12708/135728 ( reposiTUm)

Szabo, G. L., Lehner, M., Bischoff, L., Pilz, W., Kentsch, U., Aumayr, F., Klingner, N., & Wilhelm, R. (2021). Nano-hillock formation on CaF₂ due to individual slow Au-cluster impacts. European congress and exhibition on advanced materials and processes (EUROMAT 2021), Graz/Stmk, Austria. http://hdl.handle.net/20.500.12708/135487 ( reposiTUm)

Wilhelm, R. (2021). Highly charged ion interaction with surfaces. Applied Nuclear Physics (ANP), Prague/Tschechien, Czechia. http://hdl.handle.net/20.500.12708/135489 ( reposiTUm)

Wilhelm, R. (2021). Introduction to ion interaction with nanostructures. Radiate Summer School, Jyväskylä/Finnland, Finland. http://hdl.handle.net/20.500.12708/135490 ( reposiTUm)

Wilhelm, R. (2021). Nanostructure formation by strong electronic excitations. Radiate Summer School, Jyväskylä/Finnland, Finland. http://hdl.handle.net/20.500.12708/135491 ( reposiTUm)

Niggas, A., Creutzburg, S., Schwestka, J., Wöckinger, B., Gupta, D., Grande, P. L., Eder, D., Marques, J. P., Bayer, B. C., Aumayr, F., Bennett, R., & Wilhelm, R. (2021). Interatomic Coulombic decay driving the de-excitation of highly charged ions inside of atomically thin materials. 32nd International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC 2021), Canada. http://hdl.handle.net/20.500.12708/135441 ( reposiTUm)

Werl, M., Dergham, P., Vernhet, D., Lamour, E., Aumayr, F., Trassinelli, M., & Wilhelm, R. (2021). Using highly charged ions to probe the magnetic structure of 2D materials. European congress and exhibition on advanced materials and processes (EUROMAT 2021), Graz/Stmk, Austria. http://hdl.handle.net/20.500.12708/135486 ( reposiTUm)

Wilhelm, R. (2021). Charge exchange dynamics of ions in solids. Habilitandenseminar der Fakultät Physik, TU-Vienna, Austria. http://hdl.handle.net/20.500.12708/135351 ( reposiTUm)

Wilhelm, R. (2021). Interaction of slow highly charged ions with freestanding short-range ordered organic nanosheets and crystalline 2D materials - from fundamental processes to applications in structural analysis. Condensed Matter Theory Seminar, Harvard University, United States of America (the). http://hdl.handle.net/20.500.12708/135408 ( reposiTUm)

Wilhelm, R. (2021). Towards timing resolution in ion-solid interaction. Faculty of Physics - Semnan University, Iran (Islamic Republic of). http://hdl.handle.net/20.500.12708/135409 ( reposiTUm)

Muckenhuber, H., Szabo, G. L., Arkadiusz, J., Jany, B. R., Lehner, M., Niggas, A., Kentsch, U., Krok, F., & Wilhelm, R. (2021). Irradiation of Au-nano-islands with highly charged ions and characterization with AFM and SEM. 32nd International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC 2021), Canada. http://hdl.handle.net/20.500.12708/135440 ( reposiTUm)

Wilhelm, R. (2021). Atomic-scale carving of nanopores into a van-der-Waals heterostructure with slow highly charged ions. Institutsseminar Montanuniversität Leoben, Leoben, online, Austria. http://hdl.handle.net/20.500.12708/135386 ( reposiTUm)

Cupak, C., Troneberger, F., Biber, H., Szabo, P., Wilhelm, R., Böhm, D., Eisenmenger-Sittner, C., Moro, M. V., Primetzhofer, D., & Aumayr, F. (2021). Synergistic sputtering effects during quasi-concurrent Ar and D2 ion beam irradiation of tungsten films. 18th International Conference on Plasma-Facing Materials and Components for Fusion Applications (PFMC-18), Jülich, virtuel, Germany. http://hdl.handle.net/20.500.12708/135412 ( reposiTUm)

Werl, M., Niggas, A., Aumayr, F., & Wilhelm, R. (2021). Measuring charge exchange and energy loss of highly charged ions colliding with surfaces under grazing incidence. 32nd International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC 2021), Canada. http://hdl.handle.net/20.500.12708/135443 ( reposiTUm)

Szabo, G. L., Fries, J., Niggas, A., & Wilhelm, R. (2021). Generation of picosecond ion pulses using a fast pulse electron beam ion source. 32nd International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC 2021), Canada. http://hdl.handle.net/20.500.12708/135442 ( reposiTUm)

Wilhelm, R. (2021). Atomic-scale carving of nanopores into a van-der-Waals heterostructure with slow highly charged ions. DPG-Frühjahrstagung (DPG Spring Meeting) of the Surface Science Division, SurfaceScience21, virtual, Unknown. http://hdl.handle.net/20.500.12708/135381 ( reposiTUm)

Wilhelm, R. (2020). Interaction of slow highly charged ions with material surfaces and 2D materials; invited seminar talk. Institutsseminar GSI, online, Darmstadt, Germany. http://hdl.handle.net/20.500.12708/135257 ( reposiTUm)

Wilhelm, R. (2020). Time-resolved ion scattering. 1st Symposium on Ion-Solid and Atomic Collisions (ISAAC 2020), TU Wien, Austria. http://hdl.handle.net/20.500.12708/135221 ( reposiTUm)

Wilhelm, R. (2019). Energy deposition of ions in high charge states into 2D materials - Using large electronic excitation for material science at the nanoscale; invited seminartalk. Invited Seminartalk, Institutsseminar, Universität Uppsala, Department of Physics and Astronomy, Uppsala, Sweden. http://hdl.handle.net/20.500.12708/134573 ( reposiTUm)

Schwestka, J., Niggas, A., Wilhelm, R., & Aumayr, F. (2019). Ion-induced electron emission from 2D materials. 10th Workshop “Towards Reality in Nanoscale Materials” (TRNM X), Levi, Finland. http://hdl.handle.net/20.500.12708/134565 ( reposiTUm)

Wilhelm, R. (2019). Ultrafast neutralization dynamics of highly charged ions upon impact on 2D materials; invited talk. 10th Workshop “Towards Reality in Nanoscale Materials” (TRNM X), Levi, Finland. http://hdl.handle.net/20.500.12708/134564 ( reposiTUm)

Wilhelm, R., Creutzburg, S., Schwestka, J., Inani, H., Tripathi, M. K., Heller, R., Klingner, N., Niggas, A., Lehnert, T., Leiter, R., Kozubek, R., Facsko, S., Kaiser, U., Kotakoski, J., Schleberger, M., & Aumayr, F. (2019). Energy deposition of heavy ions in freestanding 2D materials. 13th European Conference on Atoms, Molecules and Photons (ECAMP-13), Florence, Italy. http://hdl.handle.net/20.500.12708/134627 ( reposiTUm)

Wilhelm, R. (2019). Unraveling energy-loss processes of low energy heavy ions in 2D materials. Deutsche Physikalische Gesellschaft (DPG) Frühjahrstagung 2019, Sektion Kondensierte Materie, Regensburg, Germany. http://hdl.handle.net/20.500.12708/134621 ( reposiTUm)

Wilhelm, R., P.L., G., Creutzburg, S., Schwestka, J., Niggas, A., & Aumayr, F. (2019). Unraveling energy loss processes of ions in 2D materials - the role of Interatomic Coulombic Decay, the charge state, and charge exchange in nuclear and electronic stopping. 13th European Conference on Atoms, Molecules and Photons (ECAMP-13), Florence, Italy. http://hdl.handle.net/20.500.12708/134626 ( reposiTUm)

Wilhelm, R. (2019). Neutralization dynamics of highly charged ions in 2D materials; invitd talk. Institutskolloquium, Advanced Research Center for Nanolithography (ARCNL), Amsterdam, Netherlands (the). http://hdl.handle.net/20.500.12708/134651 ( reposiTUm)

Niggas, A., Schwestka, J., Creutzburg, S., Wilhelm, R., & Aumayr, F. (2019). Electron emission due to ion thransmission through freestanding single layer graphene. 1st Symposium on Electron, Photon and Ion Collisions on Molecular & Atomic Nanostructures (1. EPIC-MAN), Caen, France. http://hdl.handle.net/20.500.12708/134740 ( reposiTUm)

Wilhelm, R. (2019). Collisions of highly charged ions with 2D materials - What we learn from ion transmission spectroscopy; invited talk. 31st International Conference on Photonic, Electronic and Atomic Collisions (XXXI ICPEAC), Deauville, Normandy, France. http://hdl.handle.net/20.500.12708/134755 ( reposiTUm)

Wilhelm, R., Creutzburg, S., Schwestka, J., Niggas, A., & Aumayr, F. (2019). Energy deposition of highly charged ions transmitted through single layer MoS₂. 31st International Conference on Photonic, Electronic and Atomic Collisions (XXXI ICPEAC), Deauville, Normandy, France. http://hdl.handle.net/20.500.12708/134759 ( reposiTUm)

Schwestka, J., Niggas, A., Creutzburg, S., Wilhelm, R., & Aumayr, F. (2019). Highly charged ion impact on graphene leading to the emission of low energy electrons. 31st International Conference on Photonic, Electronic and Atomic Collisions (XXXI ICPEAC), Deauville, Normandy, France. http://hdl.handle.net/20.500.12708/134758 ( reposiTUm)

Wilhelm, R., Creutzburg, S., Schwestka, J., Niggas, A., & Aumayr, F. (2019). Unraveling energy-loss processes of low energy heavy ions in 2D materials. 1st Symposium on Electron, Photon and Ion Collisions on Molecular & Atomic Nanostructures (1. EPIC-MAN), Caen, France. http://hdl.handle.net/20.500.12708/134741 ( reposiTUm)

Wilhelm, R., Creutzburg, S., Schwestka, J., Niggas, A., & Aumayr, F. (2019). Charge exchange of heavy ions transmitted through a single layer of molybdenum disulfide. 1st Symposium on Electron, Photon and Ion Collisions on Molecular & Atomic Nanostructures (1. EPIC-MAN), Caen, France. http://hdl.handle.net/20.500.12708/134742 ( reposiTUm)

Wilhelm, R. (2019). Ion Beam Spectroscopy with 2D Materials. 23rd International Workshop on Inelastic Ion-Surface Collisions (IISC-23), Matsue, Japan. http://hdl.handle.net/20.500.12708/134878 ( reposiTUm)

Niggas, A., Schwestka, J., Creutzburg, S., Aumayr, F., & Wilhelm, R. (2019). The role of contaminations on the interaction of highly charged ions with 2D materials. 31st International Conference on Photonic, Electronic and Atomic Collisions (XXXI ICPEAC), Deauville, Normandy, France. http://hdl.handle.net/20.500.12708/134757 ( reposiTUm)

Wilhelm, R. (2018). From the creation of carbon nanomembranes in a low energy electron microscope to perforation with highly charged ions. Gruppenseminar an der Friedrich-Schiller-Universität Jena, Jena, Germany. http://hdl.handle.net/20.500.12708/133930 ( reposiTUm)

Wilhelm, R., Creutzburg, S., Schwestka, J., Gruber, E., Madeira, T. I., Marques, J. G., Kobus, J., Krasheninnikov, A. V., & Aumayr, F. (2018). Interatomic Coulombic Decay: The Mechanism for Rapid Deexcitation of Hollow Atoms. 10th International Symposium on Swift Heavy Ions in Matter & 28th International Conference on Atomic Collisions in Solids (SHIM-ICACS 2018), Caen, France. http://hdl.handle.net/20.500.12708/134061 ( reposiTUm)

Wilhelm, R., Creutzburg, S., Schwestka, J., Lehnert, T., Leiter, R., Kozubek, R., Kotakoski, J., Heller, R., Krasheninnikov, A. V., Kaiser, U., Schleberger, M., Facsko, S., & Aumayr, F. (2018). Investigation of the exit charge state distributions of highly charged ions transmitted through different 2D materials. 10th International Symposium on Swift Heavy Ions in Matter & 28th International Conference on Atomic Collisions in Solids (SHIM-ICACS 2018), Caen, France. http://hdl.handle.net/20.500.12708/134062 ( reposiTUm)

Wilhelm, R. (2018). Ultrafast neutralization dynamics of highly charged ions upon impact on atomically thin solid targets. The International Conference on Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces, Budapest, Hungary. http://hdl.handle.net/20.500.12708/134124 ( reposiTUm)

Wilhelm, R. (2018). Ultrafast neutralization dynamics of highly charged ions upon impact on 2D materials. German Conference for Research with Synchrotron Radiation, Neutrons and Ion Beams at Large Facilities (SNI-2018), TU München, Germany. http://hdl.handle.net/20.500.12708/134155 ( reposiTUm)

Wilhelm, R. (2018). Rapid deexcitation of hollow atoms at a solid surface driven by Interatomic Coulombic Decay; invited talk. 19th International Conference Physics of Highly Charged Ions (HCI 2018), Lissabon, Portugal. http://hdl.handle.net/20.500.12708/134154 ( reposiTUm)

Wilhelm, R. (2018). Charge exchange and energy loss of slow highly charged ions in 2D materials; invted talk. 21st International Conference On Ion Beam Modification Of Materials (IBMM 2018), San Antonio, United States of America (the). http://hdl.handle.net/20.500.12708/134077 ( reposiTUm)

Schwestka, J., Wilhelm, R., Gruber, E., Heller, R., Kozubek, R., Schleberger, M., Facsko, S., & Aumayr, F. (2017). Radiative vs. non-radiative de-excitation of initially slow highly charged ions transmitted through a freestanding single layer of graphene. 22nd International Workshop on Inelastic Ion-Surface Collisions (IISC-2017), Dresden/Germany, EU. http://hdl.handle.net/20.500.12708/133540 ( reposiTUm)

Wilhelm, R. (2017). Highly Charged Ion Interaction with Surfaces and 2D-Materials. Seminar Institut für Allgemeine Physik (IAP), TU Wien, Austria. http://hdl.handle.net/20.500.12708/133525 ( reposiTUm)

Aumayr, F., Gruber, E., Wilhelm, R., Schwestka, J., Smejkal, V., Kozubek, R., Krasheninnikov, A. V., Schleberger, M., & Facsko, S. (2017). Charge equilibration times for slow highly charged ions in single layer graphene. 30th International Conference on Photonic, Electronic and Atomic Collisions (XXX ICPEAC), Cairns, Tropical Queensland, Australia. http://hdl.handle.net/20.500.12708/133503 ( reposiTUm)

Aumayr, F., Wilhelm, R., Schwestka, J., Gruber, E., Heller, R., Kozubek, R., Schleberger, M., & Facsko, S. (2017). Radiative de-excitation channel of slow highly charged ions transmitted through freestanding single layer graphene. 30th International Conference on Photonic, Electronic and Atomic Collisions (XXX ICPEAC), Cairns, Tropical Queensland, Australia. http://hdl.handle.net/20.500.12708/133504 ( reposiTUm)

Wilhelm, R. (2016). Charge exchange and energy loss of slow highly charged ions in two-dimensional materials; seminar talk. Seminar Johannes Kepler Universität Linz, Institute of Experimental Physics, Linz/OÖ, Austria. http://hdl.handle.net/20.500.12708/132714 ( reposiTUm)

Wilhelm, R. (2016). Highly charged ion interaction with graphene. 12th European Conference on Atoms Molecules and Photons (ECAMP12), Frankfurt/Main, Germany. http://hdl.handle.net/20.500.12708/132827 ( reposiTUm)

Melinc, D., Schwestka, J., Wilhelm, R., & Aumayr, F. (2016). A new setup for studying the interaction of slow highly charged ions with 2D materials. 12th European Conference on Atoms Molecules and Photons (ECAMP12), Frankfurt/Main, Germany. http://hdl.handle.net/20.500.12708/132830 ( reposiTUm)

Wilhelm, R., Gruber, E., Schwestka, J., Heller, R., Kozubek, R., Hierzenberger, A., Schleberger, M., Facsko, S., & Aumayr, F. (2016). Radiative deexcitation of initially slow highly charged ions transmitted through graphene. 18th International Conference on the Physics of Highly Charged Ions (HCI-2016), Kielce, Poland. http://hdl.handle.net/20.500.12708/132832 ( reposiTUm)

Schwestka, J., Wilhelm, R., Melinc, D., Leonhartsberger, L., & Aumayr, F. (2016). Experimental setup for studying collisions of highly charged ions with graphene and other 2D materials. 18th International Conference on the Physics of Highly Charged Ions (HCI-2016), Kielce, Poland. http://hdl.handle.net/20.500.12708/132833 ( reposiTUm)

Schwestka, J., Wilhelm, R., Gruber, E., Kouzubek, R., Hierzenberger, A., Heller, R., Schleberger, M., Facsko, S., & Aumayr, F. (2016). Slow highly charged ion transmission through graphene - x-ray emission. 27th International Conference Atomic Collisions in Solids (ICACS 2016), Lanzhou, China. http://hdl.handle.net/20.500.12708/132788 ( reposiTUm)

Wilhelm, R. (2016). Charge equilibration and energy loss of slow highly charged ions in single layer graphene; invited talk. 27th International Conference Atomic Collisions in Solids (ICACS 2016), Lanzhou, China. http://hdl.handle.net/20.500.12708/132790 ( reposiTUm)

Wilhelm, R., Melinc, D., Schwestka, J., Leonhartsberger, L., & Aumayr, F. (2016). Experimental setup for collision studies between slow highly charged ions and 2D materials. 27th International Conference Atomic Collisions in Solids (ICACS 2016), Lanzhou, China. http://hdl.handle.net/20.500.12708/132792 ( reposiTUm)

Gruber, E., Smejkal, V., Kralik, M., Wilhelm, R. A., Heller, R., Facsko, S., & Aumayr, F. (2015). Interaction of Multiply Charged Ions with Single Layer Graphene: Charge Exchange and Energy Loss Studies. 21th International Workshop on Inelastic Ion-Surface Collisions (IISC-21), Donostia-San Sebastián/Spain, EU. http://hdl.handle.net/20.500.12708/132069 ( reposiTUm)

Gruber, E., Wilhelm, R. A., Ritter, R., Heller, R., Facsko, S., & Aumayr, F. (2015). Threshold and Efficiency for Perforation of 1nm Thick Carbon Nanomembranes with Slow Highly Charged Ions. 29th International Conference on Photonic, Electronic and Atomic Collisions (XXIX ICPEAC), Toledo/Spain, EU. http://hdl.handle.net/20.500.12708/131972 ( reposiTUm)

Gruber, E., Smejkal, V., Kralik, M., Wilhelm, R. A., Heller, R., Facsko, S., & Aumayr, F. (2015). Interaction of multiply charged ions with single layer graphene - Part I: charge exchange and energy loss. 29th International Conference on Photonic, Electronic and Atomic Collisions (XXIX ICPEAC), Toledo/Spain, EU. http://hdl.handle.net/20.500.12708/131975 ( reposiTUm)

Aumayr, F., Heller, R., Wilhelm, R. A., Facsko, S., & El-Said, A. S. (2014). Surface nanostructuring of alkaline-earth fluorides using slow highly charged ions. 26th International Conference on Atomic Collisions in Solids (ICACS-26), Debrecen/Hungary, EU. http://hdl.handle.net/20.500.12708/131276 ( reposiTUm)

Gruber, E., Wilhelm, R. A., Heller, R., Ritter, R., Facsko, S., & Aumayr, F. (2014). Charge state dependent energy loss and charge exchange of slow highly charged ions passing through carbon nano membranes. 26th International Conference on Atomic Collisions in Solids (ICACS-26), Debrecen/Hungary, EU. http://hdl.handle.net/20.500.12708/131275 ( reposiTUm)

Gruber, E., Wilhelm, R. A., Heller, R., Facsko, S., & Aumayr, F. (2014). Exploring the interaction of slow highly charged ions with 2D materials. 1st Erwin Schrödinger Symposium 2014 of the Erwin Schrödinger Society for Nanosciences “Two Dimensional Nanostructures,” Naturhistorische Museum, Wien, Austria. http://hdl.handle.net/20.500.12708/131499 ( reposiTUm)

Aumayr, F., Wachter, G., Tökési, K., Betz, G., Lemell, C., Burgdörfer, J., El-Said, A. S., Wilhelm, R. A., Heller, R., Facsko, S., & Ritter, R. (2013). Nano-structuring of CaF₂ surfaces by slow highly charged ions: simulation and experiment. 28th International Conference on Photonic, Electronic and Atomic Collisions (XXVIII ICPEAC), Lanzhou/China, Non-EU. http://hdl.handle.net/20.500.12708/130334 ( reposiTUm)

Aumayr, F., Ritter, R., Stöger-Pollach, M., Lemell, C., Wilhelm, R., Facsko, S., Werner, U., & Gölzhäuser, A. (2012). Holes in carbon nanosheets due to impact of individual slow highly charged ions. Symposium on Surface Science 2012 (3S*12), St.Christoph/St.Anton am Arlberg/A, Austria. http://hdl.handle.net/20.500.12708/129533 ( reposiTUm)

Torrisi, G., Mascali, D., Bacci, A., Cirrone, G. A. P., Cosentino, G., Della Valle, G., Gambino, N., Mauro, G. S., Petringa, G., Russo, G., Schmitzer, C., Sorbello, G., & Wilhelm, R. A. (2021). Feasibility Study and Perspectives of proton Dielectric Laser Accelerators (p-DLA): from nanosource to accelerator scheme (p. 17). arXiv. https://doi.org/10.48550/arXiv.2106.13701 ( reposiTUm)