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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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Candidates for leadership provide statements: ANS Board of Directors
With the annual ANS election right around the corner, American Nuclear Society members will be going to the polls to vote for a vice president/president-elect, treasurer, and members-at-large for the Board of Directors. In January, Nuclear News published statements from candidates for vice president/president-elect and treasurer. This month, we are featuring statements from each nominee for the Board of Directors.
C. D. Baumann, P. E. Reagan
Nuclear Technology | Volume 7 | Number 6 | December 1969 | Pages 537-549
Fuel | doi.org/10.13182/NT69-A28373
Articles are hosted by Taylor and Francis Online.
Mathematical models describing idealized mechanisms of fission-gas release were used as criteria to determine the mode of release from fully enriched UCrfueled pyrocarbon-coated particles that had slightly 235U-contaminated outer coatings. Below 1600°C the release of krypton, and probably iodine and xenon, was due to fissions which occurred in the contaminated outer coating, with the products escaping by solid-state diffusion from the coating. Above 1600°C the krypton release increased more rapidly with temperature. The krypton originated in the fuel core and traversed the outer coating either by solid-state diffusion or Knudsen flow through micropores in the outer coating. The overall increase in release rate with time was probably due to migration of the 235U initially in the outer coating, and to the over five-fold increase in 235U contamination of the outer coating during irradiation.
