Electronic Collision Cross Sections and Ionization Phenomena in Atmospheric Gases.
Abstract
The report gives brief descriptions of generalized oscillator strength determinations on He, Ha, and H2O. The results are also given for theoretical studies on a newly defined transition potential, whose Fourier transform is proportional to the collision amplitude. Theoretical explanations are given for the exceptional strength of excitation of both singlet-singlet and singlet-triplet transitions, by electron impact, in forward scattering when the orbital term symbols are the same in ground and excited states. The first applications of a newly developed electron spectrometer are briefly described. The instrument has been used in both conventional collision cross section studies on the 1 singlet S to 2 singlet S and to 2 singlet P transitions in helium and also, using fast coincidence techniques, in the study of the autoionized transition in helium at about 60 eV.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 28, 1975
- Accession Number
- ADA007065
Entities
People
- Edwin N. Lassettre
Organizations
- Carnegie Mellon University