文献类型：期刊文献

英文题名：Numerical analysis of the neutral beam attenuation rate on the HT-7 and EAST tokamaks

作者：DNB Team[1];Zhang, Guoping[1];Hu, Liqun[1];Zhang, Xianmei[2];Huang, Juan[1];Liu, Jin[1]

机构：[1]Chinese Acad Sci, Inst Plasma Phys, Hefei, Anhui, Peoples R China;[2]E China Univ Sci & Technol, Sch Sci, Shanghai 200237, Peoples R China

年份：2008

卷号：74

期号：1

起止页码：9

外文期刊名：JOURNAL OF PLASMA PHYSICS

收录：;EI(收录号：20080411052446);WOS:【SCI-EXPANDED(收录号:WOS:000253099500002)】；

语种：英文

外文关键词：Computation theory - Electron temperature - Numerical methods - Plasma theory - Thermal effects

摘要：A diagnostic neutral beam (DNB) is applied to measure the plasma ion temperature and rotation speed in the HT-7 tokamak. Also, a heating neutral beam (HNB) is suggested as an effective method of heating a plasma for the EAST tokamak. As a necessary step) to evaluate the required beam power in both applications, the attenuation of the injected neutral beam has been numerically calculated and analyzed considering the effect of various plasma parameters, such as electron temperature, electron density, impurity concentration, and so on. Three basic atomic processes are considered here. It is shown that at the same electron density neutral beam particles call penetrate deeper at higher injection energies and a DNB with the same full energy can attenuate faster at higher electron densities. The impurity effect on the attenuation of a DNB is discussed, and the attenuation of a HNB oil the EAST tokamak is also considered.