Abstract
The adsorption of chlorine on clean germanium surfaces was studied in an all-glass system by crushing a single crystal disc of germanium in the presence of the gas and following the pressure changes. Surface areas of the powders were measured by the B.E.T. method using krypton at liquid nitrogen temperature. The experimental techniques evolved for working with chlorine are described. Chlorine was found to adsorb on germanium to monolayer coverage at room temperature and at −78°C. A slow desorption of a fraction of the adsorbed chlorine followed the rapid adsorption. The nature of the adsorption bond and a possible explanation for the slow desorption are discussed.
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