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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F22%3A00579817" target="_blank" >RIV/61389021:_____/22:00579817 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/22:00556372

Result on the web

<a href="https://journals.iucr.org/s/issues/2022/02/00/gb5123/gb5123.pdf" target="_blank" >https://journals.iucr.org/s/issues/2022/02/00/gb5123/gb5123.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1107/S1600577522000339" target="_blank" >10.1107/S1600577522000339</a>

Result language

angličtina

Original language name

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

Original language description

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, Si3N4and 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. Moreover, in contrast with the common assumption, the maximal cascade size does not necessarily coincide with the electron range. It was found that the cascade size can be controlled by careful selection of the photon energy for a particular material. Photon energy, just above an ionization potential, can essentially split the absorbed energy between two electrons (photo- and Auger), reducing their initial energy and thus shrinking the cascade size. This analysis suggests a way of tailoring the electron cascades for applications requiring either small cascades with a high density of excited electrons or large-spread cascades with lower electron densities.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Synchrotron Radiation

ISSN

0909-0495

e-ISSN

1600-5775

Volume of the periodical

29

Issue of the periodical within the volume

March

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

323-330

UT code for WoS article

000765703500006

EID of the result in the Scopus database

2-s2.0-85125849906