Properties of electron-beam produced air plasma in nonuniform magnetic field

被引：2

作者：

Luan X. ^{[1
]}

Deng Y. ^{[2
]}

Tan C. ^{[2
]}

Han X. ^{[2
]}

Mao G. ^{[1
]}

机构：

[1] College of Astronautics, Northwestern Polytechnical University

[2] Shaanxi Power Machine Design and Research Institute

来源：

Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2010年 / 22卷 / 09期

关键词：

Atmosphere; Electron beam; Monte Carlo; Nonuniform magnetic field; Plasma;

D O I：

10.3788/HPLPB20102209.2032

中图分类号：

学科分类号：

摘要：

The atmospheric electron-beam produced air plasma attracts intensive attentions recently. Based on a Monte Carlo toolkit named Geant4, a model including complete physics processes is established to simulate the passage of the electron beam in air in nonuniform magnetic field. By using the model, the characteristics of the electron-beam produced air plasma are simulated. The results indicate that, the nonuniform magnetic field is effective controlling the trajectories of electron beams and can reduce the beam divergence obviously. The energy spectrum becomes wider with the increase of beam penetration depth and secondary electrons play a significant role in low energy range. Moreover, the magnitude of energy deposition at the outlet of the transportation section is two orders higher than that at the beam end, and the highest plasma density appears at the outlet. Thus, a conclusion is drawn that the plasma density is closely related to the beam energy.

引用

页码：2032 / 2036

页数：4

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