Investigation of Detached Plasmas with Toroidal Divertor Plasma Simulator

在环形偏滤器模拟器中产生了分离的氘复合等离子体。用光谱方法测量了分离等离子体中的电子温度(0.1-0.4 eV)和密度(~10^&lt；18&gt；m^&lt；-3&gt；)。我们通过电子-离子复合(EIR)和分子激活复合(MAR)过程研究了体积等离子体复合的作用。此外，我们还用失重法研究了分离的氚等离子体中的碳侵蚀。研究发现，EIR过程中产生的中性氢对碳的化学腐蚀有很大影响。

Detached deuterium recombining plasma has been generated in the toroidal divertor simulator. The electron temperature (0.1-0.4eV) and density (～10^<18> m^<-3>) in the detached plasmas were evaluated with a spectroscopic method using a series of deuterium Balmer line emission from highly excited levels and the Stark broadening of D(2-12). We have investigated the role of volume plasma recombination through Electron-Ion Recombination (EIR) and Molecular Activated Recombination (MAR) processes. Moreover, the carbon erosion in the detached deuterium plasma has been studied with a weight- loss method. It is found that deuterium neutrals generated by EIR process could have a strong influence on the carbon chemical erosion.