聚龙一号丝阵负载Z箍缩硬X射线能谱测量  

Measurement of hard X-ray spectrum during wire array implosion on PTS

作　　者：张思群[1] 王昆仑[1] 李晶[1] 杨亮[1] 黄显宾[1] Zhang Siqun;Wang Kunlun;Li Jing;Yang Liang;Huang Xianbin(Key Laboratory of Pulsed Power,Institute of Fluid Physics,CAEP,P.O.Box 919-108,Mianyang 621999,China)

机构地区：[1]中国工程物理研究院流体物理研究所,脉冲功率科学与技术重点实验室,四川绵阳621999

出　　处：《强激光与粒子束》2018年第10期90-93,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金面上项目(11575167);国家自然科学基金青年基金项目(11505171)

摘　　要：为获取聚龙一号实验装置负载放电产生硬X射线的能谱分布,设计了一套7通道硬X射线能谱仪。介绍了这套多通道硬X射线能谱仪的测谱原理、主要参数及根据测量结果回推光源辐射能谱的解谱算法。在聚龙一号装置丝阵负载物理实验中对测量系统进行考核,获得了信噪比较高的测量波形。利用最大熵方法进行解谱,获得了丝阵负载产生的硬X射线能谱分布,辐射能段主要集中在200~500 ke V附近,且1 MeV以上光子份额较低。A 7-channel hard X-ray spectrometer was designed for measuring the photon energy distribution of the hard X-ray emitting from the loads used in Z-pinch experiments on PTS.In this paper,we present the measuring principle,configuration,measuring parameter and the unfolding method of the spectrometer.We tested our spectrometer on PTS machine,detected the hard X-rays produced during Z-pinch and acquired the signal curves of high signal-to-noise ratio.The maximum entropy method was employed in unfolding these curves and the spectrum of the X-ray radiation was obtained.The result of unfolding indicates that the hard X-ray radiation distributed mainly in 200-500 keV,rarely over 1 MeV.

关 键 词：Z箍缩 硬X射线 SI-PIN探测器 能谱 聚龙一号 

分 类 号：TL814[核科学技术—核技术及应用]