Importance of Thomas single-electron transfer in fast p-He collisions
Journal Article
·
· Physical Review. A
- Department of Physics, Stockholm University, S-10691 Stockholm (Sweden)
- Manne Siegbahn Laboratory, Stockholm University, S-11418 Stockholm (Sweden)
- Institute of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C (Denmark)
We report experimental angular differential cross sections for nonradiative single-electron capture in p-He collisions (p+ He -> H + He{sup +}) with a separate peak at the 0.47 mrad Thomas scattering angle for energies in the 1.3-12.5 MeV range. We find that the intensity of this peak scales with the projectile velocity as v{sub P}{sup -11}. This constitutes the first experimental test of the prediction from 1927 by L. H. Thomas [Proc. R. Soc. 114, 561 (1927)]. At our highest energy, the peak at the Thomas angle contributes with 13.5% to the total integrated nonradiative single-electron capture cross section.
- OSTI ID:
- 21388739
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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