Helium-W co-deposition layer: TEM observation and D retention
Helium-W co-deposition layer: TEM observation and D retention
复制标题
氦-钨共沉积层：TEM 观察和 D 保留
DOI：
10.1016/j.jnucmat.2020.152350
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发表时间：
2020
影响因子：
3.1
通讯作者：
Yajima Miyuki
中科院分区：
文献类型：
--
作者：
Kajita Shin;Asai Kosuke;Ohno Noriyasu;Tanaka Hirohiko;Yoshida Naoaki;Nagata Daisuke;Yajima Miyuki
在聚变装置的材料表面上发生壁材料和来自等离子体的离子的共沉积。在本研究中，我们着重于在氦（He）等离子体（He-W共沉积）中在473-773 K的表面温度下形成的钨（W）沉积层。通常情况下，He照射在低于1000 K的表面温度不会导致显着的形态变化，我们将从透射电子显微镜观察表明，共沉积层的粗糙度具有显着的温度依赖性，即使当温度低于800 K。我们对He-W共沉积层进行了氘等离子体辐照。结果表明，随着共沉积层形成温度的升高，He-W共沉积层上的氘保留率显著增加。
Co-deposition of wall material and ions from plasmas occurs on material surfaces in fusion devices. In this study, we focus on tungsten (W) deposition layer in helium (He) plasmas (He-W co-deposition) formed at surface temperatures of 473–773 K. Usually, He irradiation at the surface temperature below 1000 K does not lead to significant morphology changes; we will show from transmission electron microscope observations that the roughness of the co-deposition layer has a significant temperature dependence even when the temperature is less than 800 K. We conducted deuterium plasma irradiation to the He-W co-deposition layer. It was found that the deuterium retention on the He-W co-deposition layer increased significantly with increasing the formation temperature of the co-deposition layer.