| 托卡马克等离子体中q=2面附近的磁流体驰豫现象 |
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| 引用本文： | 严龙文,石秉仁.托卡马克等离子体中q=2面附近的磁流体驰豫现象[J].核聚变与等离子体物理,1990(2). |
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| 作者姓名： | 严龙文 石秉仁 |
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| 作者单位： | 核工业西南物理研究院，核工业西南物理研究院 四川 乐山，四川 乐山 |
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| 摘 要： | 本文在采用一维圆柱输运模型来摸拟托卡马克等离子体欧姆加热时,考虑了杂质辐射与磁岛演变的耦合作用。我们发现,在一定参数条件下,m/n=2/1的磁岛宽度及相应于q=2面附近的电子温度会产生驰豫振荡。本文主要讨论了出现这种驰豫现象的原因及其对增强托卡马克约束的意义。
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| 关 键 词： | 杂质辐射 磁岛演变 q=2面驰豫振荡 |
MHD RELAXATION PHENOMENA AROUND q=2 SURFACE IN TOKAMAK PLASMAS |
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| YAN Longwen SHI Bingren.MHD RELAXATION PHENOMENA AROUND q=2 SURFACE IN TOKAMAK PLASMAS[J].Nuclear Fusion and Plasma Physics,1990(2). |
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| Authors: | YAN Longwen SHI Bingren |
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| Abstract: | A one dimensional cylindrical transport model is proposed to describe the ohmically heated tokamak plasma in which the coupled interaction of the impurity and the m'agnetic island evolution is included.It is found that for some set of parameters,the m/n=2/1 island width and the corresponding electron temperature around q=2 surface might present relaxation oscillations.The physical processes responsible for these phenomena and their implication to the tokamak confinement are discussed. |
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| Keywords: | Impurity radiation Evolution of magnetic islands Relaxation oscillation around q=2 surface |
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