Abstract
The gas multiplication factorA 0 was determined in cylindrical counters at specific counter wire voltages and varied pressures, wire radii and counter shell radii for methane and various methane-argon mixtures, as used in proportional counters. It is seen that the Rose-Korff and the Curran-Craggsmodified Rose-Korff theory do not agree with the experimental results. Use of the Diethorn expression is made in presenting the results in terms of two parameters $$\overline {\Delta V} $$ and $$\overline K $$ , characteristic of the gas filling. The meaning and values of $$\overline {\Delta V} $$ and $$\overline K $$ are discussed, and the recent results of van Duuren and Sizoo for an ethanol-argon mixtire are reinterpreted in terms of these characteristic parameters.
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