TY - JOUR
T1 - Influence of helium on deuterium retention in reduced activation ferritic martensitic steel (F82H) under simultaneous deuterium and helium irradiation
AU - Yakushiji, K.
AU - Lee, H. T.
AU - Oya, M.
AU - Hamaji, Y.
AU - Ibano, K.
AU - Ueda, Y.
N1 - Publisher Copyright:
© 2016 The Royal Swedish Academy of Sciences.
PY - 2016/1/25
Y1 - 2016/1/25
N2 - Deuterium and helium retention in Japanese reduced activation ferritic martensitic (RAFM) steel (F82H) under simultaneous D-He irradiation at 500, 625, 750, and 818 K was studied. This study aims to clarify tritium retention behavior in RAFM steels to assess their use as plasma facing materials. The irradiation fluence was kept constant at 1 1024 D m-2. Four He desorption peaks were observed with He retention greatest at 625 K. At T > 625 K a monotonic decrease in He retention was observed. At all temperatures a systematic reduction in D retention was observed for the simultaneous D-He case in comparison to D-only case. This suggests that He implanted at the near surface in RAFM steels may reduce the inward penetration of tritium in RAFM steels that would result in lower tritium inventory for a given fluence.
AB - Deuterium and helium retention in Japanese reduced activation ferritic martensitic (RAFM) steel (F82H) under simultaneous D-He irradiation at 500, 625, 750, and 818 K was studied. This study aims to clarify tritium retention behavior in RAFM steels to assess their use as plasma facing materials. The irradiation fluence was kept constant at 1 1024 D m-2. Four He desorption peaks were observed with He retention greatest at 625 K. At T > 625 K a monotonic decrease in He retention was observed. At all temperatures a systematic reduction in D retention was observed for the simultaneous D-He case in comparison to D-only case. This suggests that He implanted at the near surface in RAFM steels may reduce the inward penetration of tritium in RAFM steels that would result in lower tritium inventory for a given fluence.
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U2 - 10.1088/0031-8949/T167/1/014067
DO - 10.1088/0031-8949/T167/1/014067
M3 - Conference article
AN - SCOPUS:84959884505
SN - 0281-1847
VL - 2016
JO - Physica Scripta
JF - Physica Scripta
IS - T167
M1 - 014067
T2 - 15th International Conference on Plasma-Facing Materials and Components for Fusion Applications, PFMC 2015
Y2 - 18 May 2015 through 22 May 2015
ER -