Total Cross Sections for Formation of Ions from CsBr by Collisions with Ar, Xe and NaBr(Ar).
Abstract
Measurements have been made by cross beam techniques on the absolute total cross section Q for formation of ions from CsBr in collisions with Ar and Xe, and relative total cross section for NaBr with Ar, in a range of relative kinetic energies (Xe: 12-120 eV; Ar: 20-125 eV). The absolute cross sections were obtained for CsBr. The energy dependence of the cross sections follows closely that predicted by the simple reaction model of hard spheres. A fit of this model to the measurements leads to estimates of threshold energies. Measurements have also been made on a crude energy analysis of the ions formed. Negative ions have somewhat lower energies than positive ones. The results are consistent with a knock-out model of collisional dissociation to ions, with a preference for dissociation by collision of the rare gas atom with the heavy (positive) end of the molecule. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1972
- Accession Number
- AD0746447
Entities
People
- J. Sloan
- John Ross
- L. G. Piper
- L. Hellemans
Organizations
- Purdue University