Saturation Characteristics for Alpha-Particles in Purified Gases

Abstract
Saturation curves were taken in nitrogen, argon, and an argon-hydrogen mixture. The effect of purification on the saturation properties of argon and the argon-hydrogen mixture was studied. It was found that even unpurified tank argon and nitrogen show saturation at very much smaller field strengths than, for instance, air. Upon purification an appreciable lowering of the field necessary for saturation was observed.