Observation of postcollision effects in the scattered projectile spectra for ionizing proton-helium collisions

Journal Article · Mon May 01 00:00:00 EDT 1995 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.74.3588· OSTI ID:55251

Vajnai, T; Gaus, A D; Brand, J A; Htwe, W; Madison, D H; Olson, R E; Peacher, J L; Schulz, M ^[1]

---

1. Department of Physics and the Laboratory for Atomic and Molecular Research, University of Missouri-Rolla, Rolla, Missouri 65401 (United States)

We have measured and calculated doubly differential single ionization cross sections as a function of the scattering angle and the projectile energy loss for 50 to 150 keV proton-helium collisions. These cross sections show unexpected structures as a function of both the energy loss and the scattering angle, which are interpreted as due to the postcollision interaction. Although the effects of postcollision interactions have previously been observed in electron spectra, this is the first observation of such effects for the scattered protons.

• OSTI ID: 55251
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 18 Vol. 74; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR DISTRIBUTION
CROSS SECTIONS
ELECTRON SPECTRA
ENERGY LOSSES
HELIUM
IONIZATION
KEV RANGE 100-1000
PROJECTILES
PROTON REACTIONS
SCATTERING