Single electron loss and single electron capture for 0.6-2.2 MeV He+colliding with rare gases

Autor:	H Atan, W Steckelmacher, M W Lucas
Rok vydání:	1991
Předmět:	Physics Range (particle radiation) Argon chemistry.chemical_element Semiclassical physics Condensed Matter Physics Atomic and Molecular Physics and Optics Effective nuclear charge Nuclear physics Neon chemistry Atomic physics Born approximation Molecular beam Helium
Zdroj:	Journal of Physics B: Atomic, Molecular and Optical Physics. 24:2559-2569
ISSN:	1361-6455 0953-4075
Popis:	The authors have measured the cross sections for single electron loss and single electron capture for 0.6-2.2 MeV He+ colliding with He, Ne and Ar using the growth rate method and a molecular beam target. The results are compared with other available experimental data. For single electron loss theoretical comparisons are also made with the quantal first Born approximation and some semiclassical calculations. For single electron capture, comparisons are made with the modified classical calculations based on the binary encounter model. To date there seems to be no one theory which accurately describes the data. The theory of Kaneko (1985, 1986) is clearly promising for the neon target at energies greater than 0.15 MeV amu-1 but this could be fortuitous since the theory does not similarly reproduce the data for helium and argon targets. The theory of Kumar and Roy (1979) reproduces the energy dependence of the capture cross sections in the range 0.1-1.0 MeV amu-1 but the absolute values of the cross sections are subject to a scaling of the effective charge of the He. Unfortunately no single value of this effective charge applies to all three target gases.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::25cfbf14d59ff76a7fcd9371724d050e https://doi.org/10.1088/0953-4075/24/10/012 Zobrazit plný text záznamu