Problems of DPA cross-sections above 20 MeV in FENDL-3.1d found in A-FNS neutronics analysis

Kwon, Saerom*; Konno, Chikara ; Ota, Masayuki*; Kasugai, Atsushi*

We found out that there was a questionable iron DPA value just above 20 MeV neutron energy in neutronics analyses of A-FNS using FENDL-3.1d. Our detailed investigation on the iron data in FENDL-3.1d figured out that residual nucleus production yield data of $^{56}$ Fe just above 20 MeV had a problem, which caused a sharp spike just above 20 MeV in the DPA cross section of $^{56}$ Fe. Thus we modified the yield data of $^{56}$ Fe and verified that the questionable DPA value disappeared using the modified data. We also examined DPA cross sections of other nuclei in FENDL-3.1d. It was found out that DPA cross sections of more than 70% of nuclei in FENDL-3.1d have similar problems as that of $^{56}$ Fe.

Language	:	English
Journal	:	Journal of Nuclear Science and Technology
Volume	:	57
Number	:	3
Pages	:	p.344 - 351
Publication Year/Month	:	2020/03
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Paper URL	:	https://doi.org/10.1080/00223131.2019.1661306
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Keywords	:	no keyword
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Registration No. : AA20180064
JAEA Abstracts No. : 48000389
Paper Submission No. : 22686

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