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Ion heating by lower hybrid wave in the HT-7 tokamak

机译：HT-7托卡马克中较低杂波对离子的加热

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Lower hybrid wave (LHW) heating has been investigated in the HT-7 superconducting tokamak. It has been observed that the plasma performance is obviously enhanced by LHW heating. The ion temperature was increased by 0.4 keV and the electron temperature by 0.3 keV. Meanwhile the central line-averaged electron density was increased from 1 x 10(19) to 2.6 x 10(19) m(-3). The high-energy ion tail produced by the LHW was observed from the charge-exchange spectra measured by neutral particle analysis. An ion heating efficiency of (2-3) x 10(13) eV kW(-1) cm(-3) was obtained in the experiments. The evolution of the profiles of ion temperature shows clearly an off-axis ion heating by LHW, which is in agreement with code simulations. [References: 13]
机译：在HT-7超导托卡马克中已研究了较低的杂波（LHW）加热。已经观察到，通过LHW加热，等离子体性能明显增强。离子温度升高0.4 keV，电子温度升高0.3 keV。同时，中心线平均电子密度从1 x 10（19）增加到2.6 x 10（19）m（-3）。从通过中性粒子分析测量的电荷交换光谱观察到由LHW产生的高能离子尾巴。在实验中获得的离子加热效率为（2-3）x 10（13）eV kW（-1）cm（-3）。离子温度曲线的演变清楚地表明了LHW引起的离轴离子加热，这与代码模拟相符。 [参考：13]

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