Kinetic Energies of Ionization Products from Collisions of Ar-Ar, He-He below 220 eV c.m. Energy.
Abstract
Measurements have been made of the energy spectra of ions and electrons produced in the collision of beams of neutral Ar of given energy (laboratory energy range 57-240 eV) with a gas of Ar and of neutral He (145-300 eV) with a gas of He. The energy dependence of the total cross section for ionization is consistent with previous results. The electron spectra from collisions of Ar + Ar show peaks at 0,6, and about 9 eV. From this it was estimated that about 15% of the Ar(+) ions produced come from autoinizing states of Ar. For certain ranges of initial relative energy Ar-Ar ionization occurs mostly in backscattering collisions. An analysis of the ion spectra of experiments at these initial relative energies (greater than 33 eV), made with a simple model, shows that most ions are produced by two curve crossings above the ionization potential. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1971
- Accession Number
- AD0722688
Entities
People
- E. F. Greene
- J. M. S. Henis
- John Ross
- R. H. Hammond
Organizations
- Purdue University