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Abstract:
The mean size of the Pd clusters deposited on an Al2O3 thin film influences the efficiency of photodissociation of CD4 into CD3 and D as well as the photodesorpion upon irradiation with 193-nm laser light. The picture shows the degree of desorption on Pd clusters of various sizes (as well as on a Pd(111) single-crystal surface) as a function of temperature; the values given refer to the average thickness of the evaporated metal layer.