Effect of periodic deuterium ion irradiation on deuterium retention and blistering in Tungsten

被引：4

作者：

Oya, M. ^{[1
]}

Lee, H. T. ^{[1
]}

Hara, A. ^{[1
]}

Ibano, K. ^{[1
]}

Oyaidzu, M. ^{[2
]}

Hayashi, T. ^{[2
]}

Ueda, Y. ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

[2] Natl Inst Quantum & Radiol Sci & Technol, Fus Res & Dev Directorate, 2-166 Omotedate, Rokkasho, Aomori 0393212, Japan

来源：

NUCLEAR MATERIALS AND ENERGY | 2017年 / 12卷

关键词：

Tungsten; Hydrogen isotope retention; Blistering; Divertor; TDS;

D O I：

10.1016/j.nme.2017.03.022

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The effect of periodic irradiation on Deuterium (D) retention and blistering in Tungsten (W) was investigated. W samples were exposed to D plasma at a fixed fluence while varying the irradiation cycle number (1-shot, 2-shots and 3-shots). Exposure energy and flux were similar to 50 eV and similar to 1 x 10(22) D m(-2) s(-1), respectively. Sample temperatures were 537 K and 643 K. At 573 K, D retention and blister density decreased with increasing number of irradiation cycle. In contrast at 643 K, D retention showed no dependence on number of irradiation cycle. Therefore, sample temperature during irradiation is an important parameter in comparing the results of continuous and periodic irradiation, especially in studies involving extremely-high-flux (> 10(24) D m(-2) s(-1)) irradiation and fluence dependency of D retention. (C) 2017 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.

引用

页码：674 / 677

页数：4

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