<div class="csl-bib-body">
<div class="csl-entry">Chirita-Mihaila, M. C., Szabo, G., Redl, A., Goldberger, M., & Wilhelm, R. A. (2023, September 12). <i>Ultrafast ions for time-resolved ion surface collision experiments</i> [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</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/188377
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dc.description.abstract
In contrast to electrons or photons, ion pulses are currently not available in the range of picoseconds or below. The main reason is the !arge initial momentum given by the ion mass, which limits the achievable timing precision of an ion impact on a surface or molecule (1,2].
We use a femtosecond laser system with UV light in order to trigger ultrafast electron emission from a photocathode in the linear emission regime. Optimizing for highest electron intensity per pulse, we propagate the electrons through a set of high-voltage electrostatic lenses and a strong axial magnetic field. Electron impact ionization of atoms and molecules in the gas phase leads to the formation of ions. Interestingly, due to overfocussing by the magnetic field, electrons can impact the positively- biased electrostatic Jens optics and trigger ultrafast electron-stimulated desorption (incl. ionization) which is seen by measuring short (< 200 ps) proton pulses independent of gas background pressure. In this case the initial momentum distribution of the molecular or atomic species to be ionized is not isotropic anymore breaking potentially the present pulse width barrier.
en
dc.language.iso
en
-
dc.subject
Ionen
de
dc.subject
Oberflächen
de
dc.subject
Ion-Oberflächen-Wechselwirkung
de
dc.title
Ultrafast ions for time-resolved ion surface collision experiments
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.contributor.affiliation
TU Wien, Austria
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dc.type.category
Conference Presentation
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tuw.researchTopic.id
M1
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tuw.researchTopic.name
Surfaces and Interfaces
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tuw.researchTopic.value
100
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tuw.linking
https://scienceweb.clemson.edu/iisc24/
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tuw.publication.orgunit
E134-03 - Forschungsbereich Atomic and Plasma Physics
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tuw.publication.orgunit
E134 - Institut für Angewandte Physik
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tuw.author.orcid
0000-0002-9203-4253
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tuw.author.orcid
0000-0001-9451-5440
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tuw.event.name
24th International Workshop on Inelastic Ion-Surface Collisions (IISC-24)
en
tuw.event.startdate
10-09-2023
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tuw.event.enddate
15-09-2023
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tuw.event.online
On Site
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tuw.event.type
Event for scientific audience
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tuw.event.place
Charleston, South Carolina
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tuw.event.country
US
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tuw.event.presenter
Wilhelm, Richard Arthur
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wb.sciencebranch
Physik, Astronomie
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wb.sciencebranch.oefos
1030
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wb.sciencebranch.value
100
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item.cerifentitytype
Publications
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item.languageiso639-1
en
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item.fulltext
no Fulltext
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item.openairetype
conference paper not in proceedings
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item.openairecristype
http://purl.org/coar/resource_type/c_18cp
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item.grantfulltext
restricted
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crisitem.author.dept
E134-03 - Forschungsbereich Atomic and Plasma Physics
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crisitem.author.dept
E134-03 - Forschungsbereich Atomic and Plasma Physics
-
crisitem.author.dept
E134-03 - Forschungsbereich Atomic and Plasma Physics
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crisitem.author.dept
TU Wien
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crisitem.author.dept
E134-03 - Forschungsbereich Atomic and Plasma Physics
