Effect of transport on MAR in detached divertor plasma
Effect of transport on MAR in detached divertor plasma
复制标题
分离偏滤器等离子体中运输对 MAR 的影响
DOI：
10.1016/s0022-3115(02)01533-7
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发表时间：
2003
影响因子：
3.1
通讯作者：
A. Fukano
中科院分区：
文献类型：
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作者：
K. Miyamoto;A. Hatayama;Y. Ishii;T. Miyamoto;A. Fukano
从理论上研究了在相对较低的等离子体参数范围内（ne=1× 1019 m −3，Te=1 eV），H2输运对MAR起始的影响.振动激发的分子密度和MAR的程度分别通过使用1-D Monte Carlo方法（具有输运效应）和通过求解含时的0-D速率方程，没有输运项（没有输运效应）进行评估。结果表明，在相同的氢气流量下，有输送时的MAR程度小于无输送时的MAR程度。特别是在气体入口附近，MAR的程度可以忽略不计。这种较小程度的MAR与运输是由于缺乏高度激发的振动分子，这有助于MAR。可用于MAR的氢分子密度由外部氢分子源和由于运输的流出决定，即，“净”禁闭时间。
The effect of H2transport on the onset of MAR in the relatively lower plasma parameter regime of a detached state (ne=1×1019m−3, Te=1 eV) is investigated theoretically. The vibrationally excited molecular densities and the degree of MAR are evaluated by using a 1-D Monte Carlo method (with transport effect), and by solving time-dependent 0-D rate equations without the transport term (without transport effect), respectively. It is found that the degree of MAR with transport is smaller than that without transport under the same H2flow rate. Especially, the degree of MAR is negligible near the gas inlet. This smaller degree of MAR with transport is due to the lack of highly excited vibrational molecules which contribute to MAR. The hydrogen molecular density available for MAR is determined by the external hydrogen molecular source and the outflow due to transport, i.e., a ‘net’ confinement time.