Study of Bridging of the Spectral Gap in the Lower Hybrid Wave Current Drive in the HT-7 Tokamak  

作　　者：王茂 丁伯江 徐旵东 赵连敏 刘亮 林士耀 许平 孙有文 胡怀传 杨永 贾华 王晓洁 王冬霞 秦永亮 冯建强 刘甫坤 单家方 赵燕平 

机构地区：[1]Institute of Plasma Physics,Chinese Academy of Sciences

出　　处：《Plasma Science and Technology》2009年第5期534-538,共5页等离子体科学和技术（英文版）

基　　金：the Knowledge Innovation Program of the Chinese Academy of Sciences (No.075FCQ0127);National Natural Science Foundation of China (Nos.10575104,10805057)

摘　　要：An additional lower hybrid wave （LHW） with a higher refractive index （N//） was investigated in the HT-7 tokamak to bridge the spectral gap. It was found that the spectral gap between the wave and the electrons in the outer region was bridged by the additional wave with a higher N// spectrum. The results showed that the sawteeth oscillation was suppressed by launching the additional wave, and that the power deposition profile was moved outwards and the current profile was broadened due to the application of the additional wave. Our study indicates that the spectral gap may be bridged by an additional wave with a higher N// spectrum in the outer region.An additional lower hybrid wave （LHW） with a higher refractive index （N//） was investigated in the HT-7 tokamak to bridge the spectral gap. It was found that the spectral gap between the wave and the electrons in the outer region was bridged by the additional wave with a higher N// spectrum. The results showed that the sawteeth oscillation was suppressed by launching the additional wave, and that the power deposition profile was moved outwards and the current profile was broadened due to the application of the additional wave. Our study indicates that the spectral gap may be bridged by an additional wave with a higher N// spectrum in the outer region.

关 键 词：lower hybrid wave （LHW） spectral gap sawteeth oscillation TOKAMAK 

分 类 号：TL631.24[核科学技术—核技术及应用] U445.551[建筑科学—桥梁与隧道工程]