HL-1M装置多发弹丸加料实验观测  

EXPERIMENTAL OBSERVATION ON MULTIPLE PELLET FUELING IN THE HL 1M TOKAMAK

作　　者：肖正贵[1] 刘德权[1] 李波[1] 李立[1] 董贾福[1] 邓中朝[1] 郭干城[1] 洪文玉[1] 

机构地区：[1]核工业西南物理研究院

出　　处：《核聚变与等离子体物理》1999年第1期21-26,共6页Nuclear Fusion and Plasma Physics

基　　金：国家自然科学基金

摘　　要：首次在ＨＬ－１Ｍ装置上投放使用的多发弹丸加料系统，能一次注入多达４粒１．０ｍｍ的氢弹丸，弹丸速度在５００－８００ｍ·ｓ－１之间。弹丸注入后，得到等离子体密度峰化系数ｎｅ（０）／〈ｎｅ〉＝１．８，能量约束时间与喷气加料放电的相比提高３０％以上的实验结果。观察到了弹丸注入等离子体引起弹丸消融物沿磁力线流动的图像变化。A multiple pellet injection system has been installed and used for the first time in fueling experiment on the HL 1M tokamak. Hydrogen pellets of size 1.0mm×1.4mm with veloctity of 500-800 m·s -1 were injected into an ohmic heated discharge plasma. A peaked plasma density profile with peaking ratio n e (0)/〈n e 〉 of 1.8 was obtained. The energy confinement time τ E of the plasma was enhanced by up to 30% compared with gas fueling discharge. Typical phenomena observed during pellet fueling, such as the flow and rotation of pellet ablation materials along magnetic line, the change of plasma potential, the evolution of plasma density and temperature, MHD activity and peaked soft X ray emission, are presented.

关 键 词：弹丸加料 消融物沉积 托卡马克装置 

分 类 号：TL631.24[核科学技术—核技术及应用]