Premium
Rare Gas Diffusion in Cesium Iodide: Use of Fission Recoil Doping Techniques
Author(s) -
ELLEMAN T. S.,
MEARS L. D.,
CHRISTMAN R. P.
Publication year - 1968
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1968.tb13322.x
Subject(s) - diffusion , recoil , fission , doping , fission products , xenon , radiochemistry , materials science , caesium , chemistry , analytical chemistry (journal) , atomic physics , nuclear physics , thermodynamics , neutron , physics , inorganic chemistry , optoelectronics , chromatography
Diffusion of radioactive 133 Xe in single crystals of CsI was measured using two techniques for introducing Xe: a homogeneous doping method in which 133 Xe was introduced through the decay of homogeneously distributed 133 I, and a recoil doping technique in which 133 Xe was recoiled into the specimen from an external fissionable source. The results for both techniques were consistent with a classical diffusion model and with each other. The diffusion coefficient was given by:where D 0 = 0.57 ± 2.30 cm 2 /sec, and Q = 1.01 ± 0.04 ev. The results show that classical gas diffusion applies in simple systems under ideal conditions, in contrast to the complex behavior frequently observed in fission gas diffusion studies with nuclear reactor fuels. The results also show that the recoil doping method may be a valid technique for the study of rare gas diffusion in nonfissionable solids, and that diffusion does not appear to be enhanced along the fission fragment track.