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Phys. Rev. A 68, 014701 (2003) [4 pages]

Role of the bound-state wave function in capture-loss rates: Slow proton in an electron gas

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M. Alducin1, A. Arnau2, and I. Nagy3,4
1Departamento de Ingeniería Eléctrica, ETSII, Universidad del País Vasco, Alda. Urquijo s/n, 48013-Bilbao, Spain
2Departamento de Física de Materiales, Universidad del País Vasco, Apartado de Correos 1072, 20080 San Sebastián, Spain
3Department of Theoretical Physics, Institute of Physics, Technical University of Budapest, H-1521 Budapest, Hungary
4Donostia International Physics Center, 20080 San Sebastián, Spain

Received 7 March 2003; published 9 July 2003

Capture and loss rates for protons moving in an electron gas are calculated using many-body perturbation theory. The role of the form of the bound-state wave function for weakly bound states around the proton is analyzed. We find significant differences (up to a factor of 2 higher) in the values of Auger capture and loss rates when using Hulthen-type instead of hydrogenic wave functions. Its relevance in stopping power is briefly discussed.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.68.014701
DOI:
10.1103/PhysRevA.68.014701
PACS:
34.50.Bw
 
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