Higher-order contributions to ionization plus excitation cross sections in high energy e-+ He and H++ He scattering

Autor:	Elmar Träbert, S. Fülling, Reinhard F. Bruch, E.A. Rauscher, I.L. Beigman, James H. McGuire, P H Heckmann
Rok vydání:	1993
Předmět:	Physics Cross section (physics) Amplitude Proton Scattering Ionization Principal quantum number Electron Atomic physics Condensed Matter Physics Atomic and Molecular Physics and Optics Excitation
Zdroj:	Journal of Physics B: Atomic, Molecular and Optical Physics. 26:L413-L417
ISSN:	1361-6455 0953-4075
DOI:	10.1088/0953-4075/26/14/006
Popis:	The authors have determined absolute cross sections for ionization-excitation of He by energetic electron and proton projectiles. Using a semi-empirical analytic formula the authors have been able to decompose their He+ (np) cross section data in leading order terms which are proportional to Zpn for n = 2, 3 and 4. In particular the authors have found a strong Zp3 dependence which appears to represent quantum interference effects. The set of amplitude coefficients obtained here is universal for both their electron and proton cross section results from He+ (np) states with principal quantum numbers n = 2 to 5.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::42297494c0c5f9e84df6c346cc3af154 https://doi.org/10.1088/0953-4075/26/14/006 Zobrazit plný text záznamu