Electron temperature dependence of the dissociative recombination coefficient in krypton

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Abstract
Microwave heating of the electrons with the non-resonant TE11 circular waveguide mode is used to study the dependence of the dissociative recombination coefficient in krypton. Electron density during the glow discharge afterglow is determined from measurements of the resonant frequency shift of the high-Q TM010 or TE111 cavity mode. In the electron temperature range 300-21300K and with neutral gas temperature equal to 300K the recombination coefficient may be represented as alpha (Kr2+)(cm3 s-1)=1.48*10-6 (Te/300K)-0.53. The measured recombination coefficient is independent of the krypton gas pressure in the range 3-12 Torr.