“阳”加速器钼丝X-pinch初步实验研究  

Preliminary experimental study of Mo X-pinch on "Yang" facility

作　　者：叶凡[1] 章法强[1] 杨建伦[2] 李正宏[2] 郭存[2] 许泽平[2] 徐荣昆[2] 夏广新[2] 宁家敏[2] 宋凤军[2] 陈进川[2] 钟耀华[2] 金永杰[1] 

机构地区：[1]清华大学工程物理系,北京100084 [2]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《强激光与粒子束》2006年第8期1359-1362,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金重点资助课题(10035030)

摘　　要：在“阳”加速器上进行了直径分别为10,15,20μm,交叉角为32°,45°,60°的钼(Mo)丝X-pinch实验。“阳”加速器产生的电流峰值约520 kA,上升时间80 ns。实验中通过X射线功率谱仪和纳秒分幅相机等仪器对Mo丝X-pinch辐射特性进行了诊断。实验表明:Mo丝X-pinch过程中会出现多次X射线爆发,箍缩过程中产生的热点辐射出能量超过3 keV的X射线,探测到的最小热点直径小于30μm。A series of experiments studying Mo wire X-pinch were carried out on ＂Yang＂ facility. This facility generated a peak current of about 520 kA with 80 ns rise time. The X-pinch load was composed of two identical Mo wires with a diameter of 10 μm, 15 μm or 20 μm, crossing at an angle of 32°,45° or 60°. X-ray power meter and X-ray framing camera were utilized to measure the power of the X-ray radiation and take X-ray imaging respectively. The results showed that one or more intense X-ray bursts occured and hot spots emitting X-rays of energy exceeding 3 keV were formed. The smallest hot spot was less than 30 μm in diameter.

关 键 词：X-PINCH X射线成像 热点 等离子体 加速器 

分 类 号：TL65[核科学技术—核技术及应用]