Investigation of Electromagnetic Pulses Generated by the Laser Shooting based on SG-Ⅲ facility
Yang Jinwen1, 2, Yang Ming2, Li Tingshuai2, Yi Tao1, Liu Shenye1
1. Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900; 2. School of Energy Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731
Abstract The interaction between intensive laser and metal targets can yield an extremely significant electromagnetic radiation, which not only has a large intensity and widely bandwidth, but leads to malfunctioning of various important diagnostics systems and the inaccuracy of physical experiment result. This study focus on building a diagnostic system against and outside the target chamber and collecting the pulse signal by designing multiple antennas, which are expected to provide the experimental basis for further investigation of EMP characteristic. Different data processing methods of electric field antennas and magnetic-filed antennas are used to obtain the electromagnetic field distribution inside and outside the target chamber. Multiple data shows that large discone antenna gets the highest signal while ultra wideband dipole antenna gets the lowest signal. It is necessary to make corresponding electromagnetic shielding because the high electromagnetic interference inside and outside the target chamber.
Yang Jinwen,Yang Ming,Li Tingshuai等. Investigation of Electromagnetic Pulses Generated by the Laser Shooting based on SG-Ⅲ facility[J]. Electrical Engineering, 2016, 17(11): 21-24.
[1] 江少恩, 丁永坤, 缪文勇, 等. 我国激光惯性约束聚变实验研究进展[J]. 中国科学: G辑: 物理学 力学 天文学, 2009, 39(11): 1571-1583. [2] Nuckolls J, Wood L, Thiessen A, et al. Laser com- pression of matter to super-high densities: Thermonu- clear (CTR) application[J]. Nature, 1972, 239(15): 139-142. [3] Wavrik R W, Cox J R, Fleming P J. National Ignition Facility target chamber[R]. UCRL-JC 141053, 2003. [4] Cavailler C. Inertial fusion with the LMJ[J]. Plasma Physics and Controlled Fusion, 2005, 7(12B): 389- 403. [5] 郑万国, 魏晓峰, 朱启华, 等. 神光-Ⅲ主机装置成功实现60TW/180kJ三倍频激光输出[J]. 强激光与粒子束, 2016, 28(1): 207-208. [6] Brown C G, Ayers J, Felker B, et al. Assessment and mitigation of diagnostic-generated electromagnetic interference at the National Ignition Facility[J]. The Review of Scientific Instruments, 2012, 83(10): 10D729. [7] Kmetec J, Gordon C, Macklin J, et al. MeV X-ray Generation with a femtosecond laser[J]. Physical Review Letter, 1992, 68(10): 1527-1530. [8] Gizzi L A, Giulietti D, Giulietti A. Simultaneous measurements of hard x-rays and second harmonic emission in fs laser-target interactions[J]. Physical Review Letters, 1996, 76(13): 2278-2281. [9] Poyé A, Hulin S, Bailly-Grandvaux M, et al. Physics of giant electromagnetic pulse Generation in short- pulse laser experiments[J]. Physical Review. E, Stati- stical, Nonlinear, and soft Matter Physics, 2015, 91(4): 043106. [10] Schwoerer H, Pfotenhauer S, Jäckel O, et al. Laser- plasma acceleration of quasi-monoenergetic protons from microstructured targets[J]. Nature, 2006, 439(775): 445-448.
2016, Vol. 17 
