Core structure and secondary breakdown of an exploding wire in the current-pause regime

作     者：V.M.Romanova A.R.Mingaleev A.E.Ter-Oganesyan T.A.Shelkovenko G.V.Ivanenkov S.A.Pikuz V. M. Romanova;A. R. Mingaleev;A. E. Ter-Oganesyan;T. A. Shelkovenko;G. V. Ivanenkov;and S. A. Pikuz

作者机构：P.N.Lebedev Physical Institute of the Russian Academy of Sciences53Leninskiy pr.119991MoscowRussia 

出 版 物：《Matter and Radiation at Extremes》 (极端条件下的物质与辐射（英文）)

年 卷 期：2019年第4卷第2期

页      面：43-51页

核心收录：

学科分类：0808[工学-电气工程] 080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0807[工学-动力工程及工程热物理] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0827[工学-核科学与技术] 0703[理学-化学] 0803[工学-光学工程] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：This work was supported in part by the NNSA Stewardship Sciences Academic Programs through DOE Cooperative Agreement DE-NA0001836 

主　　题：breakdown regime structure 

摘      要：The results of experiments with rapidly exploding thin conductors inthe current-pause regime are *** wires 25mmin diameter and 12 mm in length serve as loads for a GVP pulsed generator based on a low-inductance *** generator produces current pulses of up to 10 kA with dI/dt up to 50 A/ns.A 100–800-ns current-pause regime is obtained for charging voltages of 10–15 *** discharge channel structure is studied by shadow photography using 0.53-mm,10-ns second-harmonic pulses from aNd31:YAG *** the experiments,three types of secondary breakdown are observed,with different symmetry types,different current-pause durations,and different dependences on the energy deposited into the wire during its resistive *** of these breakdown types develop inside a tubular core that is produced in the current-pause stage and that remains almost undamaged by the breakdown.