Study of tritium desorption by energetic ion bombardment from tungsten material

被引：0

作者：

Kato, Shuichi ^{[1
,2
]}

Ito, Atsushi M. ^{[2
,3
]}

Takayama, Arimichi ^{[2
]}

Sasao, Mamiko ^{[1
]}

Wada, Motoi ^{[1
]}

Nakamura, Hiroaki ^{[1
,4
]}

机构：

[1] Doshisha Univ, Dept Elect & Elect Engn, Grad Sch Sci & Engn, Kyoto 6100321, Japan

[2] Natl Inst Nat Sci, Natl Inst Fus Sci, Dept Helical Plasma Res, 322-6 Oroshicho, Toki, Gifu 5095292, Japan

[3] Grad Univ Adv Studies, Dept Fus Sci, Toki, Gifu 5095292, Japan

[4] Nagoya Univ, Grad Sch Engn, Dept Energy Engn & Sci, Nagoya, Aichi 4648603, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2016年 / 55卷 / 01期

关键词：

ELEVATED-TEMPERATURES; COMPUTER-SIMULATION; CASCADES; CLUSTER; CARBON; ATOMS;

D O I：

10.7567/JJAP.55.01AH11

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To solve the problem of tritium retention in a nuclear fusion reactor, the removal of hydrogen isotopes retained in a tungsten material by exposure to the other hydrogen isotope plasma was investigated. We proposed the balance equation between the absorption and desorption of the hydrogen isotope atoms in the tungsten material. Absorption ratio and desorption yield were calculated by binary collision approximation simulation. Simulation results showed that desorption yield was proportional to the concentration of the retained hydrogen isotope. Therefore, the decrease in the retained hydrogen isotope atoms by hydrogen plasma irradiation can be regarded as approximately exponential decay. The decay rate in the case that retained deuterium atoms are removed by light hydrogen irradiation was two thirds of the decay rate in the case that retained tritium atoms are removed by deuterium irradiation. (C) 2016 The Japan Society of Applied Physics

引用

页数：7

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