Rotation characteristics of main ions and impurity ions in H-mode tokamak plasma.
Rotation characteristics of main ions and impurity ions in H-mode tokamak plasma.
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DOI:
10.1103/physrevlett.72.2199
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发表时间:
1994-04
影响因子:
8.6
通讯作者:
Kim;Burrell;Gohil;Groebner;St John HE;Seraydarian;Wade
中科院分区:
文献类型:
--
作者:
Kim;Burrell;Gohil;Groebner;St John HE;Seraydarian;Wade
Poloidal and toroidal rotation of the main ions (He[sup 2+]) and the impurity ions (C[sup 6+] and B[sup 5+]) in [ital H]-mode helium plasmas have been measured via charge exchange recombination spectroscopy in the DIII-D tokamak. It was discovered that the main ion poloidal rotation is in the [ital ion] [ital diamagnetic] [ital drift] direction while the impurity ion rotation is in the [ital electron] [ital diamagnetic] [ital drift] direction, in qualitative agreement with the neoclassical theory. The deduced radial electric field in the edge is of the same negative-well shape regardless of which ion species is used, validating the fundamental nature of the electric field in [ital L]-[ital H] transition phenomenology.