https://doi.org/10.1140/epjd/e2012-20722-4
Regular Article
Projectile angular distribution in single electron capture from helium by fast protons
1
Faculty of Engineering, University of Miyazaki,
889-2192
Miyazaki,
Japan
2
Institute of Nuclear Research of the Hungarian Academy of Sciences
(ATOMKI), 4001
Debrecen, P.O. Box
51, Hungary
a e-mail: igarashi@phys.miyazaki-u.ac.jp
Received:
12
December
2011
Received in final form:
6
February
2012
Published online:
27
March
2012
In addition to the Thomas peak, occurs at 0.47 mrad, another peak has been observed at ≈ 0.75 mrad in a recent measurement for projectile angular differential cross sections of single electron capture in proton-helium collision at impact energies of MeV region [M. Gudmundsson et al., J. Phys. B 43, 185209 (2010)]. Stimulated by this report, the differential cross section is calculated based on the first Born approximation for single ionization of helium by proton impact. Calculations with and without inter-electron correlation give almost the same results, and the peak observed experimentally near 0.75 mrad is not accounted for in the treatment.
Key words: Atomic Physics
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2012