Single- and double-electron loss of H{sup {minus}} in collisions with SF{sub 6}, CH{sub 4}, and CO
- Instituto de Fisica, Universidad Nacional Autonoma de Mexico, Apartado Postal 62251 Cuernavaca, Morelos (Mexico)
Measurement of absolute, total cross sections for single- and double-electron detachment of H{sup {minus}} projectiles in sulfur hexafluoride, methane, and carbon oxide has been made. The relative energy range under investigation was from 1 to 5 keV. The resulting cross sections for the single-electron loss of H{sup {minus}} in SF{sub 6} exhibit a flat behavior, whereas for methane and carbon monoxide the single detachment cross section increases with the energy. A free-collision model for electron loss was applied, and very good agreement was found for SF{sub 6}, while for the other targets there is a departure of the trend of the experimental data. A comparison with the results from other research laboratories is given. The measured double-electron detachment cross sections are roughly one order of magnitude smaller than the single detachment cross sections. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 286097
- Journal Information:
- Physical Review A, Vol. 54, Issue 1; Other Information: PBD: Jul 1996
- Country of Publication:
- United States
- Language:
- English
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