A Study on Deuterium Retention Behavior of Plasma-Facing Materials for EAST
A Study on Deuterium Retention Behavior of Plasma-Facing Materials for EAST
复制标题
EAST面向等离子体材料的氘保留行为研究
DOI：
10.1109/tps.2018.2825234
复制
发表时间：
2018
影响因子：
1.5
通讯作者：
Luo Guang-Nan
中科院分区：
文献类型：
--
作者：
Liu Hao-Dong;Zhou Hai-Shan;Zhao Ming-Zhong;Wu Jing;Xu Yu-Ping;Wang Jing;Zhang Ying-Chun;Sun Ning-Bo;Ding Fang;Xu Qian;Luo Guang-Nan
为了研究实验先进超导托卡马克（EAST）中面向等离子体材料（PFMs）的氘（D）滞留行为，采用EAST中的材料和等离子体评价系统，将SiC涂层石墨、体W和W涂层暴露于D等离子体中。在电子回旋共振（ECR）线性等离子体装置进行了比较研究。对于EAST实验，局部电子温度和密度分别为<inline-formula><tex-math notation="LaTeX">$T_{e}\approximate</tex-math></inline-formula>$10 -15 eV和<inline-formula><tex-math notation="LaTeX">$n_{e}\approximate $</tex-math></inline-formula>（1-3）<inline-formula><tex-math notation="LaTeX">$\times</tex-math></inline-formula>$10<sup>18</sup> m<sup>−3</sup>。在ECR设备中，等离子体参数被测量为<inline-formula><tex-math notation="LaTeX">$T_{e} \approximately 2.4$</tex-math></inline-formula>eV和<inline-formula><tex-math notation="LaTeX">$n_{e} \approximately 1.5 \times 10^{17}$</tex-math></inline-formula>m<sup>−3</sup>。用扫描电子显微镜观察了聚合物的表面形貌，用热脱附光谱研究了聚合物的固位性能。托卡马克曝光实验后，没有观察到显着的修改的表面形态。体W和W涂层表现出类似的D保留行为，而SiC涂层石墨中的D库存已被发现比W材料中的D库存大得多。
To investigate the deuterium (D) retention behavior of plasma-facing materials (PFMs) in the Experimental Advanced Superconducting Tokamak (EAST), SiC-coated graphite, bulk W, and W coating were exposed to D plasmas employing the material and plasma evaluation system in EAST. A comparative study was performed in an electron cyclotron resonance (ECR) linear plasma facility as well. For the EAST experiments, the local electron temperature and density were <inline-formula> <tex-math notation="LaTeX">$T_{e}\approx$ </tex-math></inline-formula> 10–15 eV and <inline-formula> <tex-math notation="LaTeX">$n_{e}\approx$ </tex-math></inline-formula> (1–3) <inline-formula> <tex-math notation="LaTeX">$\times$ </tex-math></inline-formula> 10<sup>18</sup> m<sup>−3</sup>, respectively. In the ECR facility, the plasma parameters were measured to be <inline-formula> <tex-math notation="LaTeX">$T_{e} \approx 2.4$ </tex-math></inline-formula> eV and <inline-formula> <tex-math notation="LaTeX">$n_{e} \approx 1.5 \times 10^{17}$ </tex-math></inline-formula> m<sup>−3</sup>. The surface morphology was examined by scanning electron microscopy, and D retention properties of various PFMs were examined by thermal desorption spectroscopy. No significant modification of the surface morphology was observed after tokamak exposure experiments. Bulk W and W coating exhibit similar D retention behavior, while D inventory in SiC-coated graphite has been found to be much larger than that in W materials.