The Use of Radioactive Material for the Generation of High Voltage

Abstract

An investigation has been made of the use of beta-emissive radioisotopes for generating high voltages. Voltage was obtained by supporting a beta-emitter on an insulated electrode in a low-pressure gas and allowing it to charge itself by virtue of its electron emission. This method represents a direct conversion of nuclear energy into electrical energy. The apparatus is described. Data on insulation breakdown, the effect of gas pressure, and the electrode material are given. The maximum voltage was obtained at a pressure of 10−3 mm of Hg. The electrical characteristics of such a generator are discussed. Using an emitter containing 0.25 curie of strontium 90, a voltage of 365 kilovolts was obtained.