Simulation of electromagnetic pulses generated by escaped electrons in a high- power laser chamber

doi:10.1088/2058-6272/aac838

Abstract

Abstract:

Intensive electromagnetic pulses (EMPs) can be generated when a high-power laser strikes a target. The transient electromagnetic field can have an intensity of up to several hundred kV m ^-1 with a broad frequency of up to several gigahertz, which may affect diagnostics and interfere with, or even damage, electronic equipment. In this paper, the process in which hot electrons produced by the laser-target interaction radiate EMPs is studied and simulated. The physical process is divided into three stages which are: the production of hot electrons; the escape of hot electrons; and the generation of EMPs. Instead of using a general finite difference time domain (FDTD) method to solve the Maxwell equations, a particle-in-cell method together with a time- biased FDTD method is applied in EMP simulation to restrain high-frequency noise. The results show that EMPs are stronger with higher laser intensity and larger target size.

Key words: laser plasma, particle-in-cell, electromagnetic pulse

Hanbing JIN (金晗冰) 1,2, Cui MENG (孟萃) 1,2, Yunsheng JIANG (姜云升) 1,2, et al.. Simulation of electromagnetic pulses generated by escaped electrons in a high- power laser chamber[J]. Plasma Sci. Technol., 2018, 20(11): 115201.

References

[1] Sauerbrey R 1996 Phys. Plasmas 3 4712 [2] Badziak J et al 1999 Laser Part. Beams 17 323 [3] Hora H et al 2002 Opt. Commun. 207 333 [4] Bourgade J L et al 2008 Rev. Sci. Instrum. 79 10F301 [5] Sheng Z M et al 2005 Phys. Rev. Lett. 94 095003 [6] Miragliotta J A et al 2011 Proc. SPIE 8037 80370N [7] Varma S et al 2014 Opt. Eng. 53 0515155 [8] De Marco M et al 2014 J. Phys.: Conf. Ser. 508 012007 [9] Xu Z Q and Meng C 2017 IEEE Trans. Nucl. Sci. 64 2829 [10] Meng C et al 2017 IEEE Trans. Nucl. Sci. 64 2618 [11] de Cervens D R et al 2009 EMC protections for high voltage and high power on a wide facility—the mégajoule laser IEEE Int. Symp. on Electromagnetic Compatibility (New York) (IEEE) [12] Raimbourg J et al 2004 Rev. Sci. Instrum. 75 4234–6 [13] Brown C G et al 2010 J. Phys.: Conf. Ser. 244 032001 [14] Brown C G et al 2013 EPJ Web Conf. 59 08012 [15] Kugland N L et al 2012 Appl. Phys. Lett. 101 24102 [16] Chen Z Y et al 2012 Phys. Plasmas 19 113116 [17] Consoli F et al 2015 Phys. Procedia 62 11 [18] Remo J L, Adams R G and Jones M C 2007 Appl. Opt. 46 6166 [19] Eder D C 2009 Mitigation of Electromagnetic Pulse (EMP) Effects from Short-Pulse Lasers and Fusion Neutrons No. LLNL-TR-411183 Lawrence Livermore National Laboratory [20] Brown C G Jr et al 2008 J. Phys.: Conf. Ser. 112 032025 [21] Mead M J et al 2004 Rev. Sci. Instrum. 75 4225 [22] Dubois J L et al 2014 Phys. Rev. E 89 013102 [23] Krasa J et al 2017 Plasma Phys. Control. Fusion 59 065007 [24] Cikhardt J et al 2014 Rev. Sci. Instrum. 85 103507 [25] Raczka P et al 2017 Laser Part. Beams 35 677 [26] Meng C et al 2017 J. Terahertz Sci. Electron. Inf. Technol. 15 70 (in Chinese) [27] Robinson T S et al 2017 Sci. Rep. 7 983 [28] Consoli F et al 2016 Sci. Rep. 6 27889 [29] Poyé A et al 2015 Phys. Rev. E 91 043106 [30] Wilks S C 1993 Phys. Fluids B 5 2603 [31] Gibbon P and Bell A R 1992 Phys. Rev. Lett. 68 1535 [32] Brunel F 1987 Phys. Rev. Lett. 59 52 [33] Poyé A et al 2015 Phys. Rev. E 92 043107 [34] Dawson J M 1983 Rev. Mod. Phys. 55 403 [35] Zhou J et al 2009 IEEE Trans. Plasma Sci. 37 2002 [36] Zhou J et al 2007 Chin. J. Comput. Phys. 24 566 (in Chinese)

Citation SearchQuick Search