Material properties of co-deposition formed on plasma facing materials in all-metal machine TRIAM-1M
Material properties of co-deposition formed on plasma facing materials in all-metal machine TRIAM-1M
复制标题
全金属机 TRIAM-1M 中等离子表面材料共沉积的材料特性
DOI：
10.1016/s0022-3115(02)01352-1
复制
发表时间：
2003
影响因子：
3.1
通讯作者：
K. Okuno
中科院分区：
文献类型：
--
作者：
M. Miyamoto;K. Tokunaga;T. Fujiwara;N. Yoshida;Y. Morimoto;T. Sugiyama;K. Okuno
为了研究杂质在面对等离子体的壁面上的再沉积，在TRIAM-1M超长PLUS放电中进行了材料暴露实验。用X射线光电子能谱和热脱附谱对在低压氧气气氛中物理气相沉积制备的暴露样品和模拟样品进行了分析。沉积层主要由Mo和O组成，含有少量的C和真空室成分(304SS)。沉积钼的化学状态为金属和氧化物的混合物，定量上与模拟样品中注入重离子的化学状态一致。这些结果表明，氢和氧的共沉积影响了TRIAM-1M沉积层的物理化学性质。即使表面形成最少的沉积量，氢同位素的保留性质也会发生很大的变化。
To examine re-deposition of impurities on the plasma facing walls, material exposing experiments were carried out in TRIAM-1M under-long plus discharges. The exposed specimens and simulate specimens, which was made by physical vapor deposition in a low pressure oxygen atmosphere, were analyzed by means of X-ray photoelectron spectroscopy and thermal desorption spectroscopy. The deposition was composed mainly of Mo and O, and contained C and components of the vacuum vessel (304SS) slightly. The chemical state of deposited Mo was mixture of metal and oxide, and agrees with the one of simulate specimen implanted with deuterium ions, quantitatively. These results indicate that the co-deposited hydrogen and oxygen, affect the physicochemical properties of the depositions in TRIAM-1M. The retention properties of hydrogen isotope could be changed largely even if the least amount of deposition is formed on the surface.