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Proceedings Paper

Excitation mechanisms in He+-He collisions
Author(s): Gebhard von Oppen; Marco Busch; Thorsten Ludwig; Ryszard Drozdowski
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Paper Abstract

Single-electron excitation of He atoms by 30 and 50 keV He+ impact was investigated using anticrossing spectroscopy. The measured anticrossing spectra give evidence for the assumption that in the intermediate energy range, where the excitation cross-sections have resonance-like maxima, excitation proceeds via Paul-trap promotion. The electron to be excited gains energy by transiently riding during the collison on the saddle of the two-center potential of the (He+)2 molecular core.

Paper Details

Date Published: 17 November 2003
PDF: 12 pages
Proc. SPIE 5258, IV Workshop on Atomic and Molecular Physics, (17 November 2003); doi: 10.1117/12.544322
Show Author Affiliations
Gebhard von Oppen, Technische Univ. Berlin (Germany)
Marco Busch, Humboldt-Univ. zu Berlin (Germany)
Thorsten Ludwig, Technische Univ. Berlin (Germany)
Ryszard Drozdowski, Univ. of Gdansk (Poland)


Published in SPIE Proceedings Vol. 5258:
IV Workshop on Atomic and Molecular Physics
Jozef Heldt, Editor(s)

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