物理学报Issue(24)：245201-1-245201-6,6.DOI:10.7498/aps.62.245201
Z箍缩内爆产生的电磁脉冲辐射
Electromagnetic pulse emission produced by Z pinch implosions
摘要
Abstract
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.关键词
Z箍缩/内爆/电磁脉冲Key words
Z pinch/implosion/electromagnetic pulse引用本文复制引用
但加坤,计策,何安,夏明鹤,丰树平,王勐,谢卫平,任晓东,黄显宾,张思群,周少彤,段书超,欧阳凯,蔡红春,卫兵..Z箍缩内爆产生的电磁脉冲辐射[J].物理学报,2013,(24):245201-1-245201-6,6.基金项目
国家自然科学基金重点项目(批准号:11135007)、中国工程物理研究院科学技术发展基金(批准号:2013B0102003)和流体物理研究所发展基金(批准号:SFZ20110402)资助的课题.@@@@Project supported by the Key Program of the National Natural Science Foundation of China (Grant No.11135007), the Science and Technology De-velopment Foundation of China Academy of Engineering Physics (Grant No.2013B0102003), and the Development Foundation of Institute of Fluid Physics, China (Grant No. SFZ20110402) （批准号:11135007）
