Abstract
A theoretical analysis for doubly differential cross sections of the single ionization of helium by proton impact as a function of the scattering angle and projectile energy loss is presented. We have used two different theoretical methods. The first approach involved an approximate solution of Faddeev-Merkuriev equations for the three-body Coulomb problem. The second approach employed the expansion of the transition amplitude in the Born series over the projectile-target interaction up to second order. A relation between these two methods was established for the case of fast collisions. It has been demonstrated that, for small scattering angles, the post-collision interaction in the final state between the charged particles strongly influences the differential cross sections, whereas double-scattering mechanisms dominate for scattering angles θf > 0.55 mrad. The results of our calculations are in a good agreement with the measurements of Schulz et al for 50-150 keV p + He collisions.
Recommended Citation
A. L. Godunov et al., "Double Differential Cross Section of Helium Ionization by Proton Impact," Journal of Physics B: Atomic, Molecular and Optical Physics, vol. 31, no. 22, pp. 4943 - 4960, IOP Publishing, Nov 1998.
The definitive version is available at https://doi.org/10.1088/0953-4075/31/22/007
Department(s)
Physics
International Standard Serial Number (ISSN)
0953-4075
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 IOP Publishing, All rights reserved.
Publication Date
28 Nov 1998
