Ion recombination coefficients in noble gases: Pressure and temperature effects
Journal Article
·
· Bulletin of the American Physical Society
OSTI ID:67884
- Univ. of Melbourne, Parkville (Australia)
Ion recombination kinetics have been observed by time resolved microwave absorption techniques on pulsed e-beam ionized rare gases. Conductivity decay in weakly ionised gases from 50 to 1500 torr was measured on time scales from 10 nanoseconds to 10 microseconds. Bulk gas pressure and ion densities ensured that recombination coefficients were for dimer cations with thermal electrons. Recombination coefficients have been measured for helium from 50 to 1200 torr and at temperatures from {minus}78{degrees}C to +100{degrees}C. At low temperatures, a distinct third body effect {alpha}{sub 3} is observed as well as a two body rate {alpha}{sub 2}. A negative temperature coefficient for {alpha}{sub 3} is observed of T{sup {minus}2.9} for helium. For argon no third body effect was observable over the temperature range studied. In neon a very weak third body effect is observed at 20{degrees}C.
- OSTI ID:
- 67884
- Report Number(s):
- CONF-9310400--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 13 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
- Country of Publication:
- United States
- Language:
- English
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