The diffuse reflextion of silver atoms at a metallic target at high temperature

Abstract

Experiments on the diffuse reflexion of metallic atoms at solid surfaces have hitherto been conducted only with mercury and the alkali metals, and at target temperatures not exceeding 600° C. To study such reflexion at temperatures of about 1000° C, using silver atoms, a special type of atom gun has been constructed and an autoradiographic technique employed where the silver used was highly enriched with radioactive silver, 110Ag. The measurements show that Knudsen's cosine law applies at these elevated temperatures.