Double-differential cross sections for the ionization-excitation of the helium by fast proton and antiproton impact

Autor:	Ladislau Nagy, Z. Osváth
Rok vydání:	2000
Předmět:	Physics Electronic correlation Helium atom General Physics and Astronomy chemistry.chemical_element chemistry.chemical_compound chemistry Antiproton Ionization Physics::Atomic Physics Impact parameter Atomic physics Antiprotonic helium Helium Excitation
Zdroj:	ResearcherID
ISSN:	0375-9601
DOI:	10.1016/s0375-9601(00)00396-0
Popis:	Calculated double differential cross sections are presented for the simultaneous ionization and excitation into the 2p state of the helium atom by fast proton and antiproton impact. We have used the semiclassical impact parameter method and the transition amplitude was calculated in second-order perturbation approximation. We have investigated the dependence of the cross sections on the sign of the projectile charge, and have analyzed the influence on the results of the inclusion of electron correlation in the initial state.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd486626237f1ff17db435a4fbabdcf9 https://doi.org/10.1016/s0375-9601(00)00396-0 Zobrazit plný text záznamu Full Text from ScienceDirect