Shalashov A G, Gospodchikov E D
Institute of Applied Physics of Russian Academy of Sciences, 46 Ulyanov st., 603950 N. Novgorod, Russia.
Phys Rev E. 2023 Aug;108(2-2):025207. doi: 10.1103/PhysRevE.108.025207.
High-power electron cyclotron resonance discharge in a laboratory open trap is frequently accompanied by growth of electron cyclotron instabilities. We study a simple universal model that explains some of the stability conditions of such plasma observed experimentally, in particular, its crucial dependence on localization of the rf power deposition zone with respect to a minimum of B. An instability threshold seems to be sensitive to particular details of electron losses in a velocity space. Comparing theoretical predictions for the threshold condition with available measurements sheds light on a structure of fast-electron losses in ongoing experiments.
实验室开放陷阱中的高功率电子回旋共振放电常常伴随着电子回旋不稳定性的增长。我们研究了一个简单的通用模型，该模型解释了实验中观察到的此类等离子体的一些稳定性条件，特别是其对射频功率沉积区相对于磁场最小值的定位的关键依赖性。不稳定性阈值似乎对速度空间中电子损失的具体细节很敏感。将阈值条件的理论预测与现有测量结果进行比较，有助于揭示当前实验中快电子损失的结构。
