An in situ RBS system for measuring nuclides adsorbed at the liquid-solid interface

An in situ RBS system has been developed for measuring heavier nuclides adsorbed at the inner surface of a thin lighter window specimen of a liquid container in order to determine the rate constants for their sorption and release at the liquid-solid interface. The tolerance of a thin silicon window of the sample assembly, in which Xe gas of one atmosphere is enclosed, against the bombardment of the probing ion beam has been tested. A desorption behaviour of a lead layer adsorbed at the SiO2 surface layer of the silicon window into deionized water has been measured as a preliminary experiment. (author)