Measurement of Electron Mobilities in Argon Gas in a Pure Vapor Cloud Chamber

Abstract

Measurements have been made of the mobilities of electrons in argon gas using pure vapor cloud-chamber techniques. Electron mobilities were measured in the $\frac{E}{{P}_{0}}$ range (${P}_{0}$ is the pressure corrected to 296\ifmmode^\circ\else\textdegree\fi{}K) from 7.9 to 11.4 V/cm mm Hg. The electron mobilities were found to be approximately constant over this $\frac{E}{{P}_{0}}$ range with a value of ${k}_{0}$ of about 3.0\ifmmode\times\else\texttimes\fi{}${10}^{5}$ ${\mathrm{cm}}^{2}$/vsec mm Hg.