Investigation of Electron Impact Processes Relevant to Visible Lasers
Final technical rept. 15 Aug 1974-14 Nov 1977
AVCO EVERETT RESEARCH LAB INC EVERETT MA
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This report describes the results of a combined experimental and theoretical program to determine the electron impact excitation cross sections of metastable argon and krypton atoms to higher lying states. This research has particular significance with regard to rare gas excimer laser research. During the course of the experimental program a crossed beams apparatus was constructed which employed a glow discharge source of metastable rare gas atoms. Initially the technique of electron spectroscopy was employed as the diagnostic, however, this was later replaced by fluorescence spectroscopy. Signal-to-noise problems restricted the scope of the measurements, however measurements were made for certain transitions of the type e Kr 5 sj yields e Kr 5 pj and e Ar 4sj yields e Ar 4 pj. Measurements were also made for ground state excitation cross sections corresponding to line excitation of Kr 5p yields 5s and Ar 4p yields 4s transitions.
- Nuclear Physics and Elementary Particle Physics