Dipole threshold laws for single and double detachment from negative ions

Document Type

Article

Publication Date

1-1-1985

Abstract

The threshold behavior of the cross section when electron detachment leaves behind a neutral atom (or molecule) with an electric dipole moment is derived through the formalism of quantum-defect theory. The cross section is a constant with a superimposed modulation with energy which has negligible amplitude for realistic situations such as the photodetachment of H- accompanied by excitation. The threshold behavior for double detachment is also derived on the basis of a Coulomb-dipole description of the two electrons. It is shown that no oscillations will be observed in the cross section for this process. © 1985 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review A

First Page

1352

Last Page

1356

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