Quantifying electron cascade size in various irradiated materials for free-electron laser applications

0556372 - FZÚ 2023 RIV GB eng J - Journal Article
Lipp, V. - Milov, I. - Medvedev, Nikita
Quantifying electron cascade size in various irradiated materials for free-electron laser applications.
Journal of Synchrotron Radiation. Roč. 29, Mar. (2022), s. 323-330. ISSN 0909-0495. E-ISSN 1600-5775
R&D Projects: GA MŠMT(CZ) EF18_053/0016627; GA MŠMT LTT17015
Grant - others:OP VVV - Mobility FZU 2(XE) CZ.02.2.69/0.0/0.0/18_053/0016627
Institutional support: RVO:68378271
Keywords : electron cascades * X-ray free-electron lasers * Monte Carlo * photon-induced cascade * electron transport
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 2.5, year: 2022
Method of publishing: Open access

Studying electron- and X-ray-induced electron cascades in solids is essential for various research areas at free-electron laser facilities, such as X-ray imaging, crystallography, pulse diagnostics or X-ray-induced damage. To better understand the fundamental factors that define the duration and spatial size of such cascades, this work investigates the electron propagation in ten solids relevant for the applications of X-ray lasers: Au, B4C, diamond, Ni, polystyrene, Ru, Si, SiC, Si3N4 and W. Using classical Monte Carlo simulation in the atomic approximation, we study the dependence of the cascade size on the incident electron or photon energy and on the target parameters. The results show that an electron-induced cascade is systematically larger than a photon-induced cascade. It was found that the cascade size can be controlled by careful selection of the photon energy for a particular material.
Permanent Link: http://hdl.handle.net/11104/0330646