Implications of neutron spectrum and flux differences on fission-fusion correlations at high neutron fluence |
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Authors: | F A Garner H L Heinisch R L Simons F M Mann |
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Institution: | 1. Pacific Northwest Laboratory , Richland, Washington, 99352;2. Westinghouse Hanford Company , Richland, Washington, 99352 |
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Abstract: | Abstract The application to fusion environments of materials data derived from fission reactors involves considerations related not only to neutron spectra but also the often dominant effect of displacement rate. It is shown in this paper that fission-fusion correlation experiments directed toward helium effects and PKA recoil spectra are frequently difficult to interpret due to the strong influences of displacement rate, low energy recoils from thermal neutron absorption and in some cases a large influence of solid transmutants. It is also shown that materials data published in earlier decades must be reevaluated in light of recent advances in defining irradiation parameters. |
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Keywords: | fission-fusion correlations displacement rate transmutation recoil spectra helium/dpa ratio copper aluminum stainless steel irradiation creep swelling tensile properties electrical resistivity |
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