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Autoren: Backe, Hartmut
Titel: De-channeling in terms of instantaneous transition rates : computer simulations for 855 MeV electrons at (110) planes of diamond
Online-Publikationsdatum: 16-Dez-2022
Erscheinungsdatum: 2022
Sprache des Dokuments: Englisch
Zusammenfassung/Abstract: Monte-Carlo simulation calculation have been performed for 855 MeV electrons channeling in (110) planes of a diamond single crystal. The continuum potential picture has been utilized. Both, the transverse potential and the angular distributions of the scattered electrons at screened atoms are based on the Doyle–Turner scattering factors which were extrapolated with the functional dependence of the Molière representation to large momentum transfers. Scattering cross-sections at bound electrons have been derived for energies less than 30 keV from the double differential cross-section as function of both, energy and momentum transfer, taking into account also longitudinal and transverse excitations. For energies above 30 keV the Møller cross-section is used. The dynamics of the particle in the continuum transverse potential has been described classically. Results of the channeling process are presented in terms of instantaneous transition rates as function of the penetration depth, indicating that channeling can be described by a single exponential function only after about 15 μm when the equilibration phase has been reached. As a byproduct, improved drift and diffusion coefficients entering the Fokker–Planck equation have been derived with which its predictive power can be improved.
DDC-Sachgruppe: 530 Physik
530 Physics
Veröffentlichende Institution: Johannes Gutenberg-Universität Mainz
Organisationseinheit: FB 08 Physik, Mathematik u. Informatik
Veröffentlichungsort: Mainz
ROR: https://ror.org/023b0x485
DOI: http://doi.org/10.25358/openscience-8344
Version: Published version
Publikationstyp: Zeitschriftenaufsatz
Nutzungsrechte: CC BY
Informationen zu den Nutzungsrechten: https://creativecommons.org/licenses/by/4.0/
Zeitschrift: The European physical journal : D
76
Seitenzahl oder Artikelnummer: 153
Verlag: Springer
Verlagsort: Berlin u.a.
Erscheinungsdatum: 2022
ISSN: 1434-6079
DOI der Originalveröffentlichung: 10.1140/epjd/s10053-022-00464-w
Enthalten in den Sammlungen:DFG-491381577-H

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