文献类型：期刊文献

英文题名：Study of the Absorption Rate of Lower Hybrid Wave Energy by High Energetic Ions in Tokamak

作者：Jiang, Minghe[1];Zhang, Xianmei[1];Yu, Limin[1];Qiu, Yisheng[1];Xue, Erbing[1];Wang, Jianbin[1];Shi, Keyi[1]

机构：[1]E China Univ Sci & Technol, Sch Sci, Shanghai 200237, Peoples R China

年份：2015

卷号：34

期号：6

起止页码：1331

外文期刊名：JOURNAL OF FUSION ENERGY

收录：;EI(收录号：20154301447306);WOS:【SCI-EXPANDED(收录号:WOS:000363490000016)】；

基金：This work was supported the National Magnetic Confinement Fusion Science Program of China under Contracts No. 2013GB106002, National Natural Science Foundation of China under Contracts No. 11205060.

语种：英文

外文关键词：High energetic ion; Lower hybrid wave; Absorption coefficient

摘要：Lower hybrid driven current has been proven to be the most efficient way to drive current in tokamak, and it will be applied in ITER. However high energetic ions generated by fusion reactions, injection of neutral beams, and RF acceleration can absorb lower hybrid wave (LHW) reducing the CD efficiency. The absorption rates of three kinds of high energetic ions to LHW under ITER's parameters are studied for comparison in the paper. The absorption rate of protons with 1 MeV is almost the same level as that of alpha particles, but the absorption rate of deuterons is lower than those of protons and alpha particles. Generally the absorption rate increases with the parallel refractive index as well as the toroidal magnetic field, and increases with the LHW frequency and then decreases with it. The background plasma temperature has little influence on the absorption rate, but it increases fast at first and then descends slightly with the background plasma density.