THE ACCOMMODATION COEFFICIENTS OF HELIUM AND KRYPTON ON ZIRCALOY-2
Technical Report
·
OSTI ID:4786285
Accommodation coefficients of helium and krypton on Zircaloy-2 were measured in a single wire cylindrical cell by the constant pressure method as a function of temperature of the Zircaloy-2 filament over the range 40 to 350 deg C at cold surface temperatures of 42, 140, and 171 deg C. For gas-covered (contaminated) surfaces, the values of the accommodation coefficients for helium followed the equation AC = (-1.66 x 10/sup -4/ T/sub f/ + 0.368) plus or minus 0.020 at 42 deg C and AC = (-3.36 x 10/sup -4/ T/sub f/ + 0.449) plus or minus 0.015 at the higher cold side temperatures. For krypton, the gas-covered surface value at 42 deg C was found to be 0.861 plus or minus 0.016, independent of filament temperature, while a single determination at 141 deg C led to a value of 0.96. (auth)
- Research Organization:
- Westinghouse Electric Corp., Bettis Atomic Power Lab., Pittsburgh
- DOE Contract Number:
- AT(11-1)-GEN-14
- NSA Number:
- NSA-16-013589
- OSTI ID:
- 4786285
- Report Number(s):
- WAPD-252
- Country of Publication:
- United States
- Language:
- English
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· J. Phys. Chem.; (United States)
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