一种脉冲强电流条件下导线电阻测量方法  

A method for estimating coil resistance with pulsed strong electric current

作　　者：王为武[1] 单连强[1] 田超[1] 袁宗强 张锋[1] 邓志刚[1] 张天奎[1] 滕建[1] 刘东晓[1] 曹磊峰[1] 周维民[1] 谷渝秋[1] Wang Weiwu;Shan Lianqiang;Tian Chao;Yuan Zongqiang;Zhang Feng;Deng Zhigang;Zhang Tiankui;Teng Jian;Liu Dongxiao;Cao Leifeng;Zhou Weimin;Gu Yuqiu(Science and Technology on Plasma Physics Laboratory,Laser Fusion Research Center,CAEP,P.O.Box 919-986-6,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院激光聚变研究中心等离子体物理重点实验室,四川绵阳621900

出　　处：《强激光与粒子束》2020年第8期32-36,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金青年基金项目(11905203);等离子体物理重点实验室基金项目(6142A0401040217)。

摘　　要：在超强激光辐照电容线圈靶产生强磁场实验中,在约50 ps时,线圈电流达到20 kA以上。通过该实验结果与磁场产生理论模型对比,可得出该导线电阻值比常温直流电阻高出3个量级。对导线材料电阻率与趋肤效应的分析结果表明,该电阻值在量级上是合理的。获得超快脉冲强电流条件下的导线电阻值,有助于更深入理解线圈靶产生强磁场过程。In experiments of strong magnetic field generation by laser irradiating capacitor-coil target, the coil current would be above 20 kA in ~50 ps. The coil resistance under this extreme condition can be obtained by comparing the current from experiments and the numerical model for magnetic field generation, which is three orders higher than that at room temperature. The result is reasonable when the coil resistivity and skin effect are considered.Coil resistance with pulsed strong electric current is important for investigating high magnetic field generation by using capacitor-coil target.

关 键 词：电阻测量 强电流 强磁场 超强激光 电容线圈靶 

分 类 号：O539[理学—等离子体物理]