Abstract
SynopsisElectron capture in Be4+ + H collisions is studied at collision energies between 1 and 100 keV/u, as a benchmark to discuss the accuracy of different theoretical approaches. Partial cross sections, obtained by solving numerically the time-dependent Schrödinger equation, are compared to the corresponding results from close-coupling and classical trajectory Monte Carlo calculations.
Highlights
In the energy range 1 keV/u ≤ E ≤ 100 keV/u
At E = 100 keV/u, the application of close-coupling methods is hindered by the need of representing transitions to very excited shells
The competition of the ionization reaction probably causes the unphysical increase of the AOCC cross section for n > 5, not shown by the Grid-TDSE package (GTDSE) and classical trajectory Monte Carlo (CTMC) results
Summary
In the energy range 1 keV/u ≤ E ≤ 100 keV/u. We have calculated the partial cross sections by solving numerically the time-dependent Schrodinger equation with the Grid-TDSE package (GTDSE) [1]. Two collision energies, where it is clear the good agreement between the close-coupling atomic expansion (AOCC) and the GTDSE method at E = 30 keV/u.
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