Clean Up of Inert Gases in a Penning Discharge Studied by a Tracer Technique

摘要

In order to obtain further information of the pumping action of a diode getter ion pump for inert gases, the clean up of inert gases, principally the ion sputtering patterns on the cathode and the location of ion on each electrode, has been observed for pumps with various cells by the use of radioactive tracer Xe131m. The radioactivity of each electrode was counted by a G‐M counter. Inert gases are cleaned up principally at the cathode; about 20% as much is cleaned up at the anode.