摘要
采用光学多道探测系统，观测了ＣＴ６Ｂ托卡马克等离子体密度涨落的幅度、频率特性和相关性以及它们的空间分布．结果表明：等离子体密度涨落的幅度为１０％—９０％，边缘区的涨落幅度高，中心区的涨落幅度低；无论边缘区还是中心区的功率谱均为连续谱；并发现边缘区的涨落具有时断时续的局部相关结构，每次相关持续的时间为０２—０５ｍｓ，空间尺度为０５—１ｃｍ．
The electron density fluctuations of CT 6B Tokamak plasma have been studied in detail through the observation of Hα emission intensity by multichannel optical diagnostics. Their various behavior, such as power spectrum, fluctuation level and correlation, have been measured. The experimental results show that some characteristics of density fluctuations are founded in CT 6B Tokamak plasma: the density fluctuation level is about 10% 90% in the radial range r=4 10 cm; the point in the range draws, nearer to the edge of plasma the level lecomes higher.A broadband power spectrum is observed at observed points along the plasma radius. There exists a local correlation structure with short correlation time, about 0 2 0 5ms, and short correlation distance, about 0 5 1cm,in the edge of plasma.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1996年第10期1694-1703,共10页
Acta Physica Sinica
基金
国家自然科学基金
