Measurements of ion energies in the tokamak plasma boundary
Measurements of ion energies in the tokamak plasma boundary
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DOI：
10.1016/j.jnucmat.2010.08.036
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发表时间：
2011-08
影响因子：
3.1
通讯作者：
M. Kocan;J. Gunn;S. Carpentier-Chouchana;A. Herrmann;A. Kirk;M. Komm;H. W. Müller;J. Pascal;R. Pitts;V. Rohde;P. Tamain
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文献类型：
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作者：
M. Kocan;J. Gunn;S. Carpentier-Chouchana;A. Herrmann;A. Kirk;M. Komm;H. W. Müller;J. Pascal;R. Pitts;V. Rohde;P. Tamain
综述了L模式放电和ELMS期间托卡马克等离子体边界离子能量的测量结果。通过编辑可用的时间测量，得到了从受限等离子体边缘到刮除层(SOL)的离子-电子温度比Ti/Te的分布。出现的图像是，在大多数等离子体参数区域，无论是在SOL中，还是在边缘，Ti值都系统地高于Te(就在最后一个闭合的通量表面外，比率高达10)。在喷流中以及最近在桅杆和8月中测量的远Sol Elm离子能量与Elm瞬变的模型一致，提供了强有力的证据，表明Elm离子可以以相当大的基座能量到达第一壁。
Measurements of ion energies in the boundary of tokamak plasmas in L-mode discharges and during ELMs are reviewed. A profile of the ion-to-electron temperature ratio Ti/Tefrom the edge of the confined plasma into the scrape-off layer (SOL) is produced by compiling the available Timeasurements. The picture that emerges is that in the SOL, as well as in the edge, Tiis systematically higher than Te(ratios up to 10 just outside the last closed flux surface) for most plasma parameter regimes. Far SOL ELM ion energies measured in JET, and more recently in MAST and AUG, agree with the models of the ELM transients, providing strong evidence that ELM ions can reach the first wall with significant fraction of the pedestal energies.