Advanced Plasma-Wall Interaction Study by using Steady/Transient Dual Plasma Irradiation Device

为了研究稳态等离子体辐照和瞬时热/粒子载荷对面向等离子体材料的协同效应，研制了一种新的等离子体枪装置，并将其与线性等离子体装置NAGDIS-I相结合。为了测量等离子体密度，研制了一种干涉仪测量方法；用光谱方法测量了离子温度；用量热计测量了脉冲等离子体的能量密度。利用Ings光电探测器进行了高时间分辨率的能量密度测量，并进行了等离子体脉冲辐照钨样品的初步实验，用扫描电子显微镜分析了样品表面形貌的变化。

To investigate synergistic effects of steady state plasma irradiation and transient heat/particle loads to plasma facing materials, a new plasma gun device was developed and was combined to the linear plasma device NAGDIS-I. To measure the plasma density, an interferometer measurement was developed; the ion temperature was measured spectroscopically.The energy density of the pulsed plasma was measured with a calorimeter. We also developed the energy density measurement with InGs photo detectors with a high time resolution.Moreover, a preliminary irradiation test of the plasma pulse to a tungsten sample was conducted, and the surface morphology change was shown with the analysis by a scanning electron microscope.