Adsorption of Activated Gases

Abstract

The adsorption of gases activated by electron bombardment has been investigated theoretically and experimentally. From postulates concerning probabilities of adsorption and deactivation for activated molecules in collision with surfaces an expression is derived giving the rate of adsorption in terms of these probabilities and of the amount of activated gas already adsorbed on the surfaces. This relation is also determined experimentally by a new method in which constant pressure is maintained in the adsorption vessel by admitting gas to it from a reservoir through a controlled leak, while the adsorption is taking place. The theoretical expression fits the experimental data, suggesting that the assumptions of the theory are essentially correct. From numerical values obtained under various experimental conditions some information is derived about the processes involved in adsorption of activated gases.