FISSION-PRODUCT RELEASE FROM FUEL-ELEMENT CLADDINGS. Quarterly Progress Report, January-March 1963
BS>Seven series of out-of-pile experiments to study xenon133 release from foils of iron-chromium alloy specimens impregnated with fission recoils were performed at 800, 1000, and 1200 l C. Release was found to be time, temperature, and concentration dependent. Sigrificant release of xenon-133 was observed at 1100 and 1200 l C during in-pile experiments. Evidence of gas -bubble formation was obtained by electron-transmission studies. Redissolution of gas in the bubbles or the freeing of trapped gas atoms was suggested by the gas release behavior. Postirradiation heating experiments were performed with iron-nickel alloy and gold foils. The xenon-133 release behavior is similar to that shown by the iron-chromium alloy. In studies of solid fission- product diffusion the recoil distribution of cerium-141 in a plate of the iron- chromium alloy was found to be linear with distance. At 1000 l C, diffusion coefficients of 3.54 x 10/sup -10/ for rutherium-103 and 5.43 x 10/sup - 11/ cm/sup 2//sec for cerium-141 and zirconium-95--niobium-95 were determined. Ruthenium is much more mobile than the other fission products at this temperature as well as at 1200 l C (auth)
- Research Organization:
- Battelle Memorial Inst., Columbus, Ohio
- DOE Contract Number:
- W-7405-ENG-92
- NSA Number:
- NSA-17-023946
- OSTI ID:
- 4711583
- Report Number(s):
- BMI-X-10039; EURAEC-625
- Country of Publication:
- United States
- Language:
- English
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