Nonperturbative treatment of single ionization ofH2by fast highly-charged-ion impact

Abstract

We present a detailed analysis of the interference effects observed for ionization in collisions of fast highly charged projectiles with molecular hydrogen. We propose a nonperturbative semiclassical approach to describe the process under consideration by solving the time-dependent Schrödinger equation fully numerically on a 3D spatial grid. We present results for Kr 34+ -H 2 collisions at 63 MeV/u impact energy and discuss different structures observed experimentally in doubly differential cross sections. The presence of Young-type minima and the absence of high-frequency oscillations are especially addressed. We also report unexpected interference patterns which can be observed for fixed-in-space molecular targets.

Coherent electron emission from simple molecules by impact of energetic charged particles

“…Moreover, it has been reported that doubling frequency oscillations are not found in DDCS when a non-perturbative semiclassical approach to solve the TDSE fully numerically is used (see e.g. [30]).…”

“…On the other hand, non-perturbative models, mainly based on the solution of the time-dependent Schrödinger equation (TDSE) for the active electron combined with a semiclassical scheme for the incoming projectile, were also developed (see e.g. [29,30]).…”