Electromagnetic Pulses Generated From Laser Target Interactions at Shenguang Ⅱ Laser Facility  

作　　者：杨进文 李廷帅 易涛 王传珂 杨鸣 杨为明 刘慎业 江少恩 丁永坤 

机构地区：[1]School of Energy Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China [2]Laser Fusion Research Center, Chinese Academy of Engineering Physics, Mianyang 621900, China

出　　处：《Plasma Science and Technology》2016年第10期1044-1048,共5页等离子体科学和技术（英文版）

基　　金：supported by the Fundamental Research Funds for the Central Universities of China(No.ZYGX2015J108);National Natural Science Foundation of China(Nos.11575166 and 51581140)

摘　　要：Significant electromagnetic pulses （EMP） can be generated by the intensive laser irradiating solid targets in inertial confinement fusion （ICF）. To evaluate the EMP intensity and distribution in and outside the laser chamber, we designed and fabricated a discone antenna with ultra-wide bands of over 10 GHz. The return loss （Sn parameter） of this antenna was below -10 dB and could even achieve under -30 dB at 3.1 GHz. The EMP intensity in this study at 80 cm and 40 cm away from the target chamber center （TCC） reached 400 kV/m and 2000 kV/m. The current results are expected to offer preliminary information to study physics regarding laser plasma interactions and will also lay experimental foundation for EMI shielding design to protect various diagnostics.Significant electromagnetic pulses （EMP） can be generated by the intensive laser irradiating solid targets in inertial confinement fusion （ICF）. To evaluate the EMP intensity and distribution in and outside the laser chamber, we designed and fabricated a discone antenna with ultra-wide bands of over 10 GHz. The return loss （Sn parameter） of this antenna was below -10 dB and could even achieve under -30 dB at 3.1 GHz. The EMP intensity in this study at 80 cm and 40 cm away from the target chamber center （TCC） reached 400 kV/m and 2000 kV/m. The current results are expected to offer preliminary information to study physics regarding laser plasma interactions and will also lay experimental foundation for EMI shielding design to protect various diagnostics.

关 键 词：electromagnetic pulses discone antenna Shenguang II laser facility inertial confinement fusion 

分 类 号：TL632.1[核科学技术—核技术及应用]