The K-shell ionisation of atoms by relativistic α particles

Autor:	J Stahov, D M Davidovic, M Kopric
Rok vydání:	1988
Předmět:	Physics Ionization Physics::Atomic and Molecular Clusters Electron shell Particle Electron Alpha particle Atomic physics Born approximation Condensed Matter Physics Spin (physics) Atomic and Molecular Physics and Optics Effective nuclear charge
Zdroj:	Journal of Physics B: Atomic, Molecular and Optical Physics. 21:1563-1572
ISSN:	1361-6455 0953-4075
DOI:	10.1088/0953-4075/21/9/015
Popis:	The K-shell ionisation of atoms by fast alpha particles is investigated using the Moller relativistic modification of the Born approximation. The incident and scattered alpha particles were described by relativistic plane waves. The Darwin approximation was used for the description of the K-shell atomic electrons and the ejected electron. The total cross sections were calculated as functions of alpha -particle impact energy for Sn, Ag, Au, Pb and compared with the available experimental data and calculations. The results obtained are in good accordance with the experimental data of Dost et al (1981). The influence of spin change of the K-shell electron on the total cross section was also studied. The results show that the collisions involving spin change of the atomic electron could be significant at higher energies of the incident alpha particles, especially for atoms with greater nuclear charge Z.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1bbf7d1686a30f3efc9389cc4e149556 https://doi.org/10.1088/0953-4075/21/9/015 Zobrazit plný text záznamu