Energy Confinement Dynamics and Soft X-Ray Spectra in Experiments on ECR Plasma Heating in the L-2M Stellarator at Heating Powers to 1 MW

被引：6

作者：

Meshcheryakov, A. I. ^{[1
]}

Vafin, I. Yu. ^{[1
]}

Grishina, I. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia

来源：

BULLETIN OF THE LEBEDEV PHYSICS INSTITUTE | 2020年 / 47卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

stellarators; magnetic plasma confinement; soft X-ray spectra; ECR heating; energy lifetime;

D O I：

10.3103/S1068335620010042

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The shape of soft X-ray spectra and energy confinement dynamics is studied in experiments on central ECR heating with a power to 1 MW using the L-2M stellarator. It is shown that the spectra remain two-temperature with increasing heating power. In this case, the average electron energy in the epithermal spectral region increases reaching 25% of the average energy over the entire spectrum at an ECR heating power of 950 kW. It is shown that the plasma confinement energy in the L-2M stellarator gradually decreases at heating powers above 700 kW, which is associated with an increase in the plasma radiative loss power, caused by impurity accumulation.

引用

页码：10 / 15

页数：6

共 5 条

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