FISSION-PRODUCT RELEASE FROM FUEL-ELEMENT CLADDINGS. Quarterly Progress Report for April-June 1963
Postirradiation heating experiments to study xenon-133 release from foils of iron--chromium alloy specimens impregnated with fission recoils were performed at 600 to 1200 deg C. Release was found to be time, temperature, and concentration dependent. A low activation energy appears to be associated with a long-time release component. Significant release of xenon-133 was observed at 1100 and 1200 deg C through 10 mils of cladding during in-pile experiments; high release of fission gases from a specimen clad with 2 mils of foil was observed but is believed to have resulted from a defected specimen. In solid fission product studies the recoil distribution of cerium-141 in a plate of the iron- chromium alloy was found to be linear with distance. Diffusion anneals were performed at 800, 1000, and 1200 deg C and preliminary activation energies for the diffusion of tellurium-132, ruthenium-103, ceriunm-141, Zirconium95, barium- 140, and iodine-131 vary from 23 to 65 kcal/ mole. At the higher temperatures tellurium-132 and ruthenium-103 diffuse more rapidly than the remaining isotopes. (N.W.R.)
- Research Organization:
- Battelle Memorial Inst., Columbus, Ohio
- DOE Contract Number:
- W-7405-ENG-92
- NSA Number:
- NSA-17-030964
- OSTI ID:
- 4673659
- Report Number(s):
- BMI-X-10050; EURAEC-741
- Country of Publication:
- United States
- Language:
- English
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