Equivalent circuit model for loss current in magnetically insulated transmission line

Li Yongdong; Ma Meng; Wang Hongguang; Liu Chunliang

doi:10.3788/HPLPB20132508.2157

Volume 25 Issue 08

Nov. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(08): 2157-2160

Li Yukun, Chen Tao, Deng Bo, et al. Energy spectral response of photocathode for soft X-ray streak camera[J]. High Power Laser and Particle Beams, 2014, 26: 022002. doi: 10.3788/HPLPB201426.022002

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Li Yongdong, Ma Meng, Wang Hongguang, et al. Equivalent circuit model for loss current in magnetically insulated transmission line[J]. High Power Laser and Particle Beams, 2013, 25: 2157-2160. doi: 10.3788/HPLPB20132508.2157

Li Yukun, Chen Tao, Deng Bo, et al. Energy spectral response of photocathode for soft X-ray streak camera[J]. High Power Laser and Particle Beams, 2014, 26: 022002. doi: 10.3788/HPLPB201426.022002

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Equivalent circuit model for loss current in magnetically insulated transmission line

doi: 10.3788/HPLPB20132508.2157

1.
Key Laboratory for Physical Electronics and Devices of the Ministry of Education,Xi’an Jiaotong University,Xi’an 710049,China

Received Date: 2012-11-05
Rev Recd Date: 2013-04-21
Publish Date: 2013-06-19

Abstract

Abstract

A modified formula for SCL current was established, based on particle-in-cell(PIC) simulation results and formulas for conventional space-charge-limited(SCL) current and critical magnetic insulation current. And a fast interpolation model for loss current in magnetically insulated transmission line(MITL) was presented, which refrains from solving generalized Poisson equation and can be used in equivalent circuit modeling. As verification, a long coaxial MITL was simulated with both the equivalent circuit method and the PIC method. It was found that the time histories of the load voltage agreed well with each other, which were obtained by the two methods separately. The interpolation model repeated the dynamic process of current loss and the computation efficiency of the equivalent circuit simulation was more than 3000 times higher than that of the PIC simulation.
- magnetically insulated transmission line,
- particle-in-cell method,
- equivalent circuit method,
- loss current

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