Determination of the Residual Current of an Ionization Chamber and the True Conductivity of Dielectric Liquids

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Abstract
A method is described to determine residual current due to phenomena inside of an ionization chamber which are found to be essential for intensity measurements of cosmic rays. In an ionization chamber containing a dielectric liquid, the residual current can be practically identified with the true conductivity of the liquid. It is found that in the case of liquid hexane, the residual current amounts only to one-sixth of the total current. The method to be described here permits one to decide whether or not the true conductivity of the liquid tends to zero, if we continue to purify the liquid, or whether the liquid behaves, with respect to ionizing radiations, as a high pressure gas.

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