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HT-7托卡马克slide-away放电充气对等离子体行为的影响
The effect of gas puffing on plasma during slide-away discharge in the HT-7 tokamak
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摘要: 本文研究了slide-away放电条件下的等离子体约束性能;分析了充气对等离子体约束性能以及反常多普勒共振不稳定性的影响.研究了等离子体密度的提升对slide-away放电过程中逃逸电子辐射行为的影响.研究结果发现：slide-away放电充气可以抑制逃逸电子反常多普勒不稳定性,但是使得等离子体约束状态变差,逃逸电子辐射增强.
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关键词:
- 托卡马克 /
- slide-away放电 /
- 充气 /
- 逃逸电子
Abstract: In tokamak plasma,the discharge will turn into ＂runaway＂ discharge from normal discharge if the plasma density becomes very low.The discharge will enter into ＂slide-away＂ discharge if the density decays to a critical one,in which the confinement of plasma （exactly supper thermal electrons） is better than that in normal discharge.The confinement of plasma and the anomalous Doppler instability during slide-away discharge gas puffing are investigated.The effect of gas puffing on runaway electrons during slide-away discharge is also studied in this paper.It is found that the anomalous Doppler instability can be suppressed by the gas puffing during slide-away discharge,while the confinement of plasma becomes poor,and many high energy runaway electrons occur during gas puffing. -
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