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BWXT will scout potential TRISO fuel production sites in Wyoming
BWX Technologies Inc. announced today that its Advanced Technologies subsidiary has signed a cooperation agreement with the state of Wyoming to evaluate locations and requirements for siting a potential new TRISO nuclear fuel fabrication facility in the state.
T. D. Märk, M. Pahl, R. Vartanian
Nuclear Technology | Volume 52 | Number 2 | February 1981 | Pages 295-305
Technical Paper | Technique | doi.org/10.13182/NT81-A32672
Articles are hosted by Taylor and Francis Online.
Annealing characteristics of spontaneous (fossil) and induced (recent) fission tracks in sphene were measured in a temperature range of 873 to 768 K. Results include the reduction of number density, maximum track length (horizontal projection), and average track length (horizontal projection) as a function of annealing time [up to 1.5-107 s (175 days)]. Using the track dimension method, a corrected fission track age for sphene was derived. The annealing characteristics are interpreted by means of a new annealing model, yielding information about the elementary processes governing the annealing mechanism for the etchable zone of fission tracks. Monomolec-ular recombination and the annealing of dislocation loops are proposed as the likely dominant annealing processes. Annealing coefficients α(T) obtained from the number density annealing characteristics under the assumption of a single exponential function approximation are used to derive an age-temperature relationship giving for a measured corrected fission track age in sphene the corresponding temperature . This age-temperature relationship of sphene is compared with the age-temperature relationship of apatite.