Diffusion of Krypton in Cesium and Rubidium Iodide; A Comparison of Results Obtained Following Reactor Irradiation and Ion Bombardment

T h e present study shows that under suitably chosen condi t ions , the same results of rare gas di f fusion coe f f i c ients can b e obta ined in samples which are reactor irradiated to p r o d u c e a homogeneous concentrat ion of rare gas, and in samples that are labe led with rare gas b y contro l l ed ion b o m b a r d m e n t . In the present study, the di f fusion of krypton in R b l and Cs l was f o u n d to f o l l ow the empir i ca l rule of y i e ld ing activation enthalpies in the range ( 1 . 4 ± 0 . 2 ) x 1 0 ~ 3 Tm e V , with Tm = mel t ing point in ° K . T r a p p i n g of rare gases (gas-gas or gas-damage interact ions) was observed at h igh gas concentrat ion .