Helium concentration measurement in tungsten fuzz-like nanostructures by means of thermal desorption spectroscopy

被引：36

作者：

Gasparyan, Yu. ^{[1
]}

Efimov, V. ^{[1
]}

Bystrov, K. ^{[2
]}

机构：

[1] Natl Res Nucl Univ MEPhI, Moscow Engn Phys Inst, Kashirskoe Shosse 31, Moscow 115409, Russia

[2] DIFFER Dutch Inst Fundamental Energy Res, FOM Inst, Partner Trilateral Euregio Cluster, Eindhoven, Netherlands

来源：

NUCLEAR FUSION | 2016年 / 56卷 / 05期

关键词：

helium; tungsten; thermal desorption spectroscopy; fuzz; plasma wall action; fusion; SURFACE;

D O I：

10.1088/0029-5515/56/5/054002

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The concentration of helium in tungsten fuzz-like nanostructures has been measured by means of thermal desorption spectroscopy. Fuzz was formed on the W surface under intensive plasma irradiation at 1500 K. The helium content was measured first in the as-irradiated sample, and then in a similar sample with the fuzz mechanically scraped from the sample surface. The difference gave the He content in the fuzz, which was estimated to be He/ W = (13 +/- 4)%.

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