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Residual He gas analyses released from JPCA and F82H irradiated at SINQ target 3

SINQターゲット3で照射したJPCAとF82H鋼材に残留するHeガス測定

菊地 賢司; 斎藤 滋   ; 辻本 和文 ; 川合 將義*; Dai, Y.*

Kikuchi, Kenji; Saito, Shigeru; Tsujimoto, Kazufumi; Kawai, Masayoshi*; Dai, Y.*

SINQターゲット3で照射した材料中に残留するヘリウム(4)ガスを質量分析器又は、ヘリウム漏洩検出器により測定した。材料はオーステナイトステンレス鋼のJPCAと核融合材料用に開発された低放射化フェライトマルテンサイト鋼のF82Hである。試料はTEMデスク又は試験後の引張試験片から採取した。試料を2000度まで加熱し、残留ガス全量を放出させた。測定量をこれまでに報告された他の鋼材に残留するガス量と比較した結果、50%以内で一致した。

STIP specimens irradiated at SINQ target 3 included helium and hydrogen isotopes generated in the spallation reaction process. A total amount of residual gases with having mass four in the specimens were measured by mass spectrometer or helium leak detector. JPCA is a modified austenitic stainless steel by adding Ti. F82H is a reduced-activation ferritic-martensitic steel developed in fusion program. Specimens are TEM disks and pulled tensile specimens. Samples were heated up to 2000$$^{circ}$$C and allresidual gases were released. A amount of gas was compared with the reported values on the different steels and agreed with other data within 50%.

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