Enhanced current drive efficiency in a long discharge on TRIAM-1M
Enhanced current drive efficiency in a long discharge on TRIAM-1M
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增强 TRIAM-1M 长时间放电时的电流驱动效率
DOI：
10.1088/0029-5515/41/11/302
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发表时间：
2001
期刊：
影响因子：
3.3
通讯作者：
H. Nakashima
中科院分区：
文献类型：
--
作者：
K. Hanada;S. Itoh;K. Nakamura;H. Zushi;M. Sakamoto;E. Jotaki;Y. Pan;M. Hasegawa;S. Kawasaki;H. Nakashima
在TRIAM - 1M上的长时间纯低杂波电流驱动（LHCD）等离子体中观察到增强的电流驱动（ECD）效率模式，其特征是电流驱动效率ηCD从（0.3 - 0.4）×10¹⁹A/（W·m⁻²）自发增加到（0.6 - 1.0）×10¹⁹A/（W·m⁻²）。由于线平均电子密度以及离子和电子温度的升高，能量约束时间也得到改善。电流驱动效率与电子密度成正比。向ECD模式的转变发生在一个临界密度处，该临界密度略微取决于注入波在环向的折射率N ||。
The enhanced current drive (ECD) efficiency mode, which is characterized by a spontaneous increase of current drive efficiency ηCD from (0.3-0.4) × 1019A/W m-2 to (0.6-1.0) × 1019 A/W m-2, is observed in long pure LHCD plasmas on TRIAM-1M. The energy confinement time is also improved due to the increase of line averaged electron density, and of the ion and electron temperatures. The current drive efficiency is proportional to the electron density. The transition to ECD mode occurs at a critical density, which depends slightly on the refractive index in the toroidal direction N|| of the injected wave.