Multi-center character in single electron emission from H2 targets by ion impact

GALASSI, M. E.; PABLO D. FAINSTEIN; RIVAROLA, R. D.

PHYSICAL REVIEW A - ATOMIC, MOLECULAR AND OPTICAL PHYSICS

AMER PHYSICAL SOC

Año: 2004 vol. 70 p. 32721 - 32721

1050-2947

Single ionization cross sections for heavy-ion impact on H2are calculated by applying thecontinuum-distorted-wave-eikonal-initial-state model. We have used arepresentation of the bound-state initial wave function which takes intoaccount the molecular character of the target. To describe the finalcontinuum state we have used the two-effective-center approximation,previously employed with success to study electron capture fromH2 by ion impact. Interference effects are also analyzed andthe dependence of the oscillation frequency with the projectile velocityand ejection angle is presented. The importance of adequately describingthe target as a molecule is emphasized.