A simple approximation for low-energy total detachment cross sections
- 14 July 1979
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 12 (13) , L387-L393
- https://doi.org/10.1088/0022-3700/12/13/002
Abstract
The problem of electron detachment processes in low-energy H--He and H--Ar collisions is investigated within the zero-radius potential approximation of Demkov and Devdariani (1973), using ab initio data on the negative-ion molecular systems. It is shown that the strong-coupling region extends beyond the crossing point Rc of the neutral and ionic potential energy curves. Much information can be obtained from only the knowledge of the molecular quantities for R>Rc which can be obtained by standard molecular calculations. The scattering equations are solved in the sudden approximation allowing for a very simple approximation to the total cross sections; the results compare well with experimental data.Keywords
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