Homogeneous ion combination coefficients in sulphur hexafluoride

Wilson, Derek E.; Quiring, W. J.

doi:10.1063/1.322705

Cited by 11 publications

(2 citation statements)

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“…The range of pressures in our experiments corresponds to that investigated by Wilson et al (1976) and to the plateau region observed by Schmidt and coworkers intermediate between the high-and low-pressure regimes. Measurements at 20 Torr yielded recombination rates which were approximately a factor of five lower than those measured at the higher pressures, also in agreement with the results of Schmidt and COworkers.…”

Section: Resultssupporting

confidence: 83%

Ion-ion recombination in mixtures of methane and sulphur hexafluoride

Cornell

Littlewood

1987

J. Phys. D: Appl. Phys.

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We have measured the recombination rate for positive and negative ions in sulphur hexafluoride and in mixtures of methane and sulphur hexafluoride in an electron beam sustained discharge. Measurements were made as a function of gas composition, gas pressure in the range 100 to 600Torr, and reduced electric field strength in the range 12 to 150Td. When plotted as a function of an effective ion temperature, defined by the drift velocities of the ions in the applied electric field, the rates in each of the gas mixtures follow the same T;d.6 power law. From comparisons with theories appropriate to the recombination of positive ions with electrons it is suggested that the index of the power law might indicate that the recombination process follows an indirect path, with the approaching ions being initially trapped in stable orbits before final stabilisation of the collision.

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