Todorov D, Tarnev Kh, Paunska Ts, Lishev St, Shivarova A
Faculty of Physics, Sofia University, 5 J. Bourchier Blvd., Sofia BG-1164, Bulgaria.
Department of Applied Physics, Technical University-Sofia, 8 Kl. Ohridski Blvd., Sofia BG-1000, Bulgaria.
Rev Sci Instrum. 2014 Feb;85(2):02B104. doi: 10.1063/1.4826540.
Results from initial stage of modeling of the SPIDER source of negative hydrogen/deuterium ions currently under development in Consorzio RFX (Padova) regarding ITER are presented. A 2D model developed within the fluid plasma theory for low-pressure discharges (free-fall regime maintenance) is applied to the gas-discharge conditions planned and required for the SPIDER source: gas pressure of 0.3 Pa and radio-frequency (rf) power of 100 kW absorbed in a single driver. The results are for the spatial distribution of the plasma characteristics (charged particle densities, electron temperature and electron energy flux, plasma potential, and dc electric field) with conclusions for the role of the electron energy flux in the formation of the discharge structure.
本文介绍了帕多瓦射频联盟目前正在为国际热核聚变实验堆（ITER）开发的负氢/氘离子SPIDER源建模初始阶段的结果。在流体等离子体理论框架下针对低压放电（自由落体模式维持）开发的二维模型，被应用于SPIDER源规划和所需的气体放电条件：气体压力为0.3帕斯卡，单个驱动器吸收的射频（rf）功率为100千瓦。给出了等离子体特性（带电粒子密度、电子温度和电子能量通量、等离子体电势和直流电场）的空间分布结果，并就电子能量通量在放电结构形成中的作用得出了结论。
