American Nuclear Society

Home / Store / Journals / Electronic Articles / Nuclear Science and Engineering / Volume 49 / Number 4

Temperature Dependence of Uranium Carbide Fission-Gas Swelling: An Analytical Evaluation

Alan J. Markworth

Nuclear Science and Engineering

Volume 49 / Number 4 / December 1972 / Pages 506-507


Member Price:$27.00
Member Savings:$3.00

A simple model for the gas-diffusion-controlled growth of stationary gas bubbles in an isothermal solid, under constant rate of gas generation, is used to evaluate the temperature dependence of fission-gas swelling in uranium monocarbide. Using experimental data for the temperature-dependent volume diffusivity of xenon in uranium carbide, it is found that the predicted temperature at which the onset of fission-gas swelling occurs, evaluated at a given fission density, correlates relatively well with swelling data and is of the order of one-half the absolute melting point. Variations of bubble concentration and gas-generation rate are found to affect this predicted swelling-onset temperature only to a relatively slight extent.

Questions or comments about the site? Contact the ANS Webmaster.