A LOW-PRESSURE GLOW-DISCHARGE PROTON SOURCE

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Abstract
A cold cathode proton source operating at about 200 v. at a pressure of a few microns is described. The discharge is essentially similar to that of a Philips vacuum gauge. The characteristics of the discharge the ion extraction, and the proton production have been investigated. The addition of 10% of oxygen to the hydrogen increased the proton content of the ion beam from 10 to 50% while introducing only about 1% of oxygen and other foreign ions. The ionization processes are discussed.

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