Measurement of the ²³⁵U fission cross section relative to the standard ¹⁰B(n, 𝛼) reaction at the CERN n_TOF facility: Results for Eₙ < 2 eV

Michalopoulou, V.; Diakaki, M.; Kyritsis, N.; Kokkoris, M.; Vlastou, R.; Mavromatakou-Karamitsiou, M.; Eleme, Z.; Patronis, N.; Aberle, O.; Alcayne, V.; Amaducci, S.; Andrzejewski, J.; Babiano, V.; Bacak, M.; Balibrea-Correa, J.; Bernardes, A. P.; Berthoumieux, E.; Beyer, R.; Boromiza, M.; Griesmayer, E.; Jericha, E.; Žugec, P.; n_TOF Collaboration

doi:10.1016/j.apradiso.2025.112063

Record link:

http://hdl.handle.net/20.500.12708/223716

Title:

Measurement of the ²³⁵U fission cross section relative to the standard ¹⁰B(n, 𝛼) reaction at the CERN n_TOF facility: Results for Eₙ < 2 eV

Citation:

Michalopoulou, V., Diakaki, M., Kyritsis, N., Kokkoris, M., Vlastou, R., Mavromatakou-Karamitsiou, M., Eleme, Z., Patronis, N., Aberle, O., Alcayne, V., Amaducci, S., Andrzejewski, J., Babiano, V., Bacak, M., Balibrea-Correa, J., Bernardes, A. P., Berthoumieux, E., Beyer, R., Boromiza, M., … n_TOF Collaboration. (2025). Measurement of the ²³⁵U fission cross section relative to the standard ¹⁰B(n, 𝛼) reaction at the CERN n_TOF facility: Results for Eₙ < 2 eV. Applied Radiation and Isotopes, 226, Article 112063. https://doi.org/10.1016/j.apradiso.2025.112063

Publisher DOI:

10.1016/j.apradiso.2025.112063

Publication Type:

Article - Original Research Article

Language:

English

Author Collaboration:

n_TOF Collaboration

Organisational Unit:

E354 - Institute of Electrodynamics, Microwave and Circuit Engineering
E141-04 - Forschungsbereich Neutron- and Quantum Physics

Journal:

Applied Radiation and Isotopes

ISSN:

0969-8043

Date (published):

Dec-2025

Number of Pages:

Publisher:

PERGAMON-ELSEVIER SCIENCE LTD

Peer reviewed:

Yes

Keywords:

Fission; Micromegas; n_TOF; Cross-section

Abstract:

The neutron induced fission of ²³⁵U is a very important reaction for nuclear technology applications and for the design of future systems to produce clean and safe energy. In addition, it is used as a reference reaction for neutron cross-section measurements, thus, its cross section is needed with a high accuracy over a wide energy range. In this work, the measurement for the ²³⁵U(n,f) reaction was carried out at the n_TOF facility located at CERN, at experimental area EAR-2. The standard ¹⁰B(n, α) reaction was used as reference, while a setup based on the gaseous Micromegas detectors was implemented for the detection of the fission fragments and α and ⁷Li-particles of the two reactions, respectively. In order to determine the thickness of the ¹⁰B sample NRA measurements were carried out at the National Center for Scientific Research “Demokritos”.

Research Areas:

Special and Engineering Materials: 15%
Materials Characterization: 70%
Modeling and Simulation: 15%

Science Branch:

1030 - Physik, Astronomie: 100%

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