Investigation of fast pitch angle scattering of runaway electrons in the EAST tokamak

Lu Hongwei ^* Hu Liqun Li Yadong Zhong Guoqiang Lin Shiyao Xu Ping EAST-Team

文摘	This paper reports that an experimental investigation of fast pitch angle scattering (FPAS) of runaway electrons in the EAST tokamak has been performed. From the newly developed infrared detector (HgCdTe) diagnostic system, the infrared synchrotron radiation emitted by relativistic electrons can be obtained as a function of time. The FPAS is analysed by means of the infrared detector diagnostic system and the other correlative diagnostic systems (including electron-cyclotron emission, hard x-ray, neutrons). It is found that the intensity of infrared synchrotron radiation and the electron-cyclotron emission signal increase rapidly at the time of FPAS because of the fast increase of pitch angle and the perpendicular velocity of the energetic runaway electrons. The Parail and Pogutse instability is a possible mechanism for the FPAS
来源	Chinese Physics. B ,2010,19(12):125201-1-125201-6 【核心库】
DOI	10.1088/1674-1056/19/12/125201
关键词	runaway electron beam ; instability ; fast pitch angle scattering ; tokamak
地址	Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, 230030
语种	英文
文献类型	研究性论文
ISSN	1674-1056
学科	物理学
基金	国家自然科学基金 ; JSPS-CAS Core University Program in the field of "Plasma and Nuclear Fusion"
文献收藏号	CSCD:4077661