X-Ray Radiation Characteristics of Nested-Wire Array Implosion in Sino-Russian Joint Z-pinch Experiments on Angara-5-1

作     者：徐荣昆 李正宏 宁佳敏 郭存 许泽平 杨建伦 李林波 夏广新 毕欣生 丁宁 刘强 顾元朝 E.V.Grabovsky G.M.Oleynic S.L.Nedoseev V.V.Alexandrov K.N.Mitrofanov M.V.Zurin G.S.Volkov I.A.Porofeev I.N.Frolov V.P.Smirnov 

作者机构：ChinaAcademyofEngineeringPhysicsPOBox919-212Mianyang621900 TroitskInstituteforInnovationandThermonuclearResearchesTroitsk142190Russia 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2005年第22卷第2期

页      面：413-415页

核心收录：

学科分类：07[理学] 08[工学] 070204[理学-等离子体物理] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 0702[理学-物理学] 

主　　题：Z-箍缩 X-线放射特征 测量方法 激光投影 等离子体 

摘      要：We report and discuss the results of x-ray radiation measurements in theSino-Russian joint Z-Pinch experiments on Angara-5-1 facility with a load current of 2.5-3.6MA. Themeasurements were conducted by using an x-ray power meter (XRPM) and a time-resolved one-dimensionalx-ray imaging system developed in China Academy of Engineering Physics. The experimental resultsindicate that an x-ray power-platform prior to a main peak and a less intensive sub-peak after themain peak in the waveform exist for the nested-wire array implosions, and the radiation process isrelatively faster than that in the case of the single array. Laser shadowgraph of the implodingplasma suggests that the prior power-platform is a result of the collision of the inner-outer plasmalayers. The faster radiation process of nested array implosion can be explained by analysing thecorresponding result of the time-resolved one-dimensional imaging system, which demonstrates abetter axial imploding uniformity and synchronization. In comparison with x-ray diode, the XRPMyields a higher height of x-ray power-platform due to its flat energy response. The sub-peak afterthe main peak is proposed to be a result of the later-time additional implosion of plasma.