Title of article
Energy and fluence dependences of helium retention in stainless steel
Author/Authors
Nobuta، نويسنده , , Y. and Yamauchi، نويسنده , , Y. and Hirohata، نويسنده , , Y. and Hino، نويسنده , , T. and Ashikawa، نويسنده , , N. and Nishimura، نويسنده , , K. and Sagara، نويسنده , , A. and Masuzaki، نويسنده , , S. Kiyoka Ozaki، نويسنده , , T. and Noda، نويسنده , , N. and Komori، نويسنده , , A. and Motojima، نويسنده , , O.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
5
From page
932
To page
936
Abstract
Helium retention behavior of 316L stainless steel (316L SS) used for the first wall of the large helical device (LHD) was investigated by using an ECR plasma/ion apparatus and thermal desorption spectroscopy. Samples of 316L SS were irradiated by helium ions with different energy. After helium ion irradiation with 100s eV energy, the desorption temperature of the retained helium was below 800 K. As increasing ion energy, the fraction of helium desorbed temperatures >800 K gradually increased. The retained amount of helium saturated for ion fluences above 1.0 × 1017 He/cm2. The retained amount of He was similar to that observed in other plasma facing materials. For irradiation fluences >1.0 × 1017 He/cm2, blister formation was observed. The present results are consistent with the desorption behavior of 316L SS samples exposed to LHD plasmas.
Keywords
Helium , Stainless steel , Desorption , ion irradiation , LHD
Journal title
Journal of Nuclear Materials
Serial Year
2005
Journal title
Journal of Nuclear Materials
Record number
1362245
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