原子与分子物理学报2001，Vol.18Issue(1)：13-16,4.
HL-lM装置杂质粒子输运与约束特性
Features of impurity transport and particle confinement on HL-lM tokamak
摘要
Abstract
the features of Al impurity transport and particle condinement have been studied with transient impurity injection at plasma edge in Ohmic discharge and low hybrid current drive on HL-lM tokamak respectively. A small amount of Al impurity was injected using laser below-off technique. The impurity spectrum and soft X-ray intensity were measured with VUV spectroscopy and with soft X-ray camera respectively. The studies show that in the core regime the impurity transport could be described by new-classical theory in the sawtooth-free discharges or in the sawtooth discharger except the sawtooth crash in both cases basically. During the sawtooth crash the impurity transport could be controlled by MHD instabilities in the core region. The effective time is so short(less than 300μs usually) that the average transport coefficients of the impurity transport is slight higher than that calculated from new-classical theory in the core region. In the confinement range the impurity diffusion coefficient is much higher than that estimated with new-classical theory. The impurity transport is anomalous. the particle confinement could be improved in a certain condition during the low hybrid current drive.关键词
杂质VUV辐射/激光吹气/低杂波电流驱动分类
数理科学引用本文复制引用
王全明,李可华,冯兴亚,王恩耀..HL-lM装置杂质粒子输运与约束特性[J].原子与分子物理学报,2001,18(1):13-16,4.
