“聚龙一号”丝阵实验轴向一维X光辐射功率分布  

Axial 1-D X-ray power distribution of wire-array implosions on JL-Ⅰ

作　　者：黄展常 杨建伦[1] 徐荣昆[1] 李正宏[1] 蒋树庆[1] 叶繁[1] 胡青元[1] 甯家敏[1] 许泽平[1] 

机构地区：[1]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》2016年第12期9-13,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金重点项目(11135007);国家自然科学基金重点项目(11475153);国家自然科学基金青年项目(11305154)

摘　　要：通过一维条纹相机诊断系统对"聚龙一号"(JL-Ⅰ)四类单层丝阵负载进行了轴向X光辐射测量。由于瑞利-泰勒不稳定性的影响,大部分负载表现出两端发光比中间滞后、阳极端发光比阴极端滞后、阳极端发光总强度弱于阴极端的现象。通过不同类型丝阵对比,对于20mm直径的丝阵,JL-Ⅰ驱动器的匹配负载线质量在0.9mg/cm附近。轴向辐射同步性与辐射功率之间存在相关性。Axial X-ray radiations of four types of wire-arrays were diagnosed via 1-D streak camera system on JL- I . Because of the influence of Rayleigh-Taylor instability, wire-arrays mostly had the behavior that X-ray rose up later near both cathode and anode than that of the middle, X-ray near anode rose up later than that of cathode and the intensity of X-ray close to anode seemed weaker than that of cathode. With the comparison of different types of wire-arrays, the optimized mass per unit length of a 20 mm diameter wire-array on JL- I was about 0.9 mg/cm. Further, there was a correlation between axial radiation synchronization and radiation power.

关 键 词：Z箍缩 一维条纹像 丝阵X光辐射 轴向同步性 

分 类 号：TL65[核科学技术—核技术及应用]