Analytically solvable model of scattering of relativistic charged particles in solids

0541079 - ÚFP 2021 RIV GB eng J - Článek v odborném periodiku
Medvedev, Nikita - Volkov, A.E.
Analytically solvable model of scattering of relativistic charged particles in solids.
Journal of Physics D-Applied Physics. Roč. 53, č. 23 (2020), s. 1-11, č. článku 235302. ISSN 0022-3727. E-ISSN 1361-6463
Grant CEP: GA MŠMT LTT17015; GA MŠMT(CZ) LM2015083
Institucionální podpora: RVO:61389021
Klíčová slova: analytical cross sections * closed solution for scattering * complex dielectric function * cross sections * inelastic scattering * linear response
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 3.207, rok: 2020
Způsob publikování: Omezený přístup
https://iopscience.iop.org/article/10.1088/1361-6463/ab7c09

We propose an analytically solvable model of the differential and total inelastic cross sections, mean free paths, and energy losses of charged projectiles (electrons, positrons, protons, ions, etc) within a unified framework. It is applicable within a broad range of incident energies (from 30-50 eV up to GeV in a case of an electron). Only the optical data are used as an input, without any ad-hoc correction terms, splitting into close and distant collisions, or fitting and adjustable parameters. We demonstrate that the derived expressions are in a very good agreement with other more complex numerical models and experimental data. Application of the derived formulae greatly saves computational time of evaluation of cross sections with respect to the numerical integration required by other models.
Trvalý link: http://hdl.handle.net/11104/0318659