Abstract
Absolute measurements of the total double-electron detachment (DED) cross sections for 3- to 50-keV ${\mathrm{H}}^{\mathrm{\ensuremath{-}}}$ ions incident on helium atoms and for 5- to 50-keV ${\mathrm{H}}^{\mathrm{\ensuremath{-}}}$ ions incident on neon and argon atoms are reported in this paper. The present DED cross sections are in better agreement with the previously reported DED cross sections for helium targets than for either neon or argon targets. A semiempirical calculation of the double detachment cross sections for the intermediate-energy collision region is also presented in this paper.
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