Dynamics of plasma confinement during ECR heating in the L-2M stellarator
Dynamics of plasma confinement during ECR heating in the L-2M stellarator
复制标题
L-2M 仿星器 ECR 加热过程中等离子体约束的动力学
DOI：
10.1088/1742-6596/1094/1/012009
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
V. I. Karyaka
中科院分区：
文献类型：
--
作者：
A. Meshcheryakov;I. A. Grishina;V. I. Karyaka
在L-2 M仿星器的ECR等离子体加热实验中，考虑了等离子体约束动力学。结果表明，在等离子体加热和进一步冷却的过程中，可以分为四个阶段。在每个阶段，等离子体约束都有其独特的特点。在第一阶段，等离子体约束由辐射损失决定。在第二阶段，等离子体中形成了电子温度和密度的自洽分布以及准稳态约束模。ECRH关闭后，第三阶段开始。等离子体开始冷却，其参数根据L-2 M仿星器的缩放而变化，保持自洽的电子温度和密度分布。等离子体外围冷却后，等离子体约束的第四阶段开始，辐射损失再次成为决定性因素。
Dynamics of plasma confinement was considered in the experiments on ECR plasma heating in the L-2M stellarator. It was ascertained that four stages can be distinguished in the process of plasma heating and further cooling. In each stage, plasma confinement has its own distinctive features. In the first stage, plasma confinement is determined by radiation loss. In the second stage, the self-consistent profiles of electron temperature and density form in plasma and the quasi-stationary confinement mode ensues. After ECRH switching off, the third stage begins. The plasma starts cooling and its parameters change in accordance with the scaling of the L-2M stellarator, the self-consistent electron temperature and density profiles being maintained. After the plasma periphery becomes cooled, the fourth stage of plasma confinement starts, and radiation loss becomes a determinative factor again.