Open AccessElectromagnetic pulse emission produced by Z pinch implosions
Author(s) -
Dan Jiakun,
Xiaodong Ren,
Xianbin Huang,
Si-Qun Zhang,
Su-Qin Zhou,
段书超 Duan Shuchao,
Kai Ouyang,
Cai Hongchun,
Bing Wei,
Ce Ji,
An He,
Xia Minghe,
Feng Shuping,
Meng Wang,
Weiping Xie
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.245201
Subject(s) - implosion , z pinch , electromagnetic pulse , physics , pinch , pulse (music) , pulsed power , electromagnetic radiation , radiation , optics , plasma , power (physics) , nuclear physics , detector , quantum mechanics
In this paper, we represent the radiation characteristics of electromagnetic pulse generated by Z pinch implosion. Magnetic energy which couples with motions of metallic wire arrays or solid liners driven by Z pinch can radiate away. Theoretical results indicate that the radiation power of electromagnetic pulse is determined by both load current and implosion trace. Experiments are carried on primary test stand facility at Institute of Fluid Physics where a current rising to 7 MA in (10%–90%) 65 ns is used to drive a wire array Z pinch. The measured load current and implosion trace show that the Z pinch can deliver about 1 GW, 10 ns full width, 20–70 MHz central frequency, broadband electromagnetic pulse with an energy conversion efficiency of 10-7. Parameters of electromagnetic pulse are much smaller than those of X-ray with a power of 50 TW and an energy of 0.5 MJ. In the approximation of weak relativistic case, the power of electromagnetic pulse which is proportional to sixth power of load current, dramatically increases with current increasing. Soft X-ray radiation is an important channel for dissipating a considerable fraction of energy provided by facility. The results presented here demonstrate that electromagnetic pulse emission in the case of higher load current can cause significant damage to diagnostic devices. Moreover, intense electromagnetic pulse produced by this method may have many potential applications.