均匀电荷密度下的磁绝缘理论研究

doi:10.16568/j.0254-6086.201903015

核聚变与等离子体物理 ›› 2019, Vol. 39 ›› Issue (3): 282-288.DOI: 10.16568/j.0254-6086.201903015

• 等离子体应用 • 上一篇

均匀电荷密度下的磁绝缘理论研究

印茂伟，孙元，韦家军，张雨亭，李玉琳，廖鹏

(西南科技大学国防学院，绵阳 621010)

出版日期:2019-09-15 发布日期:2019-09-16
作者简介:印茂伟(1972-)，男，重庆万州人，博士，副教授，从事数值模拟研究。
基金资助:
国家自然科学基金(11705154)；国防基础科研项目(JCKY2017209B010，JCKY2018209B001)；四川省科技计划项目(2018GZ0196)；大学生创新训练项目(201810619023)

Study of magnetic insulation with uniform charge density

YIN Mao-wei, SUN Yuan, WEI Jia-jun, ZHANG Yu-ting, LI Yu-lin, LIAO Peng

(School of National Defense Sci & Tech, Southwest University of Sci & Tech, Mianyang 621010)

Online:2019-09-15 Published:2019-09-16

摘要/Abstract

摘要：

在平行板磁绝缘传输线中均匀电荷密度下，分别对压力平衡下的修正层流模型和非压力平衡和非层流模型进行了求解，比较了两种理论模型下的结果。分析表明：相对于非层流模型而言，层流模型因未考虑径向速度，其电荷密度偏低，阳极电场、阳极磁场及阳极电流都偏大。此外，粒子模拟结果显示非层流模型具有更高的精度。最后，对压力平衡条件、均匀电荷密度下的层流以及非层流模型，从平行板理论推广到一般构型。

关键词: 磁绝缘, 均匀电荷密度, 压力平衡, 非层流

Abstract:

With the uniform charge density in the magnetically insulated transmission line (MITL) of parallel plate, a laminar flow model with pressure balance and a new model without the assumption of laminar flow and pressure balance are solved analytically, respectively. The results of laminar flow model and non-laminar flow model are compared. It is shown that the charge density is smaller and electric field, magnetic field on anode is bigger in laminar flow model as without radial velocity of electrons. Then, the result of particle-in-cell simulation is compared for the two theories and shows that the accuracy of non-laminar model is higher than laminar model. Finally, the pressure balance equation and two models of laminar and non-laminar with the uniform charge density have been promoted to coaxial MITL and cone MITL.

Key words: Magnetic insulation, Uniform charge density, Pressure balance, Non-laminar

中图分类号:

O441.6

印茂伟，孙元，韦家军，张雨亭，李玉琳，廖鹏. 均匀电荷密度下的磁绝缘理论研究[J]. 核聚变与等离子体物理, 2019, 39(3): 282-288.

YIN Mao-wei, SUN Yuan, WEI Jia-jun, ZHANG Yu-ting, LI Yu-lin, LIAO Peng. Study of magnetic insulation with uniform charge density[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2019, 39(3): 282-288.

参考文献

[1] 刘腊群, 蒙林, 邓建军, 等. 磁绝缘传输线中心汇流区数值模拟的实现 [J]. 物理学报, 2010, 59(3):1643-1650.
[2] 郭帆, 李永东, 王洪广, 等. Z 箍缩装置外磁绝缘传输线全尺寸粒子模拟研究 [J]. 物理学报, 2011, 60(10):162-168.
[3] 王超, 曾浩, 卢波, 等. HL-2A 装置3.7GHz LHCD系统传输线效率测量分析 [J]. 核聚变与等离子体物理,2017, 37(4): 418-421.
[4] Ron A, Mondelli A A, Rostoker N. Equilibria for magnetic insulation [J]. IEEE Transactions on Plasma Science, 2007, 1(4): 85-93.
[5] Creedon J M. Magnetic cutoff in high current diodes [J].J. Appl. Phys., 1977, 48(3): 1070-1077.
[6] Creedon J M. Relativistic brillouin flow in the high ν/γ diode [J]. J. Appl. Phys., 1975, 46(7): 2946-2955.
[7] Mendel C W, Seidel D B, Rosenthal S E. A simple theory of magnetic insulation from basic physical considerations[J]. Laser & Particle Beams, 1983, 1(3): 311-320.
[8] Miller P A, Mendel C W. Analytic model of Applied-B ion diode impedance behavior [J]. J. Appl. Phys., 1987,61(2): 529-539.
[9] Davidson R C, Chan H W, Chen C, et al. Equilibrium and stability properties of intense non-neutral electron flow[J]. Review of Modern Physics, 1991, 63(2): 341-374.
[10] Rose D V, Genoni T C, Clark R E, et al. Electron flow stability in magnetically insulated vacuum transmission lines [J]. Phys. Plasmas, 2011, 18(3): 2332-1.
[11] Stygar W A, Lott J A, Wagoner T C, et al. Improved design of a high-voltage vacuum-insulator interface [J].Review of Modern Physics, 2005, 8(5): 50401.
[12] Ottinger P F, Schumer J W. Rescaling of equilibrium magnetically insulated flow theory based on results from particle-in-cell simulations [J]. Phys. Plasmas, 2006,13(6): 3928.
[13] Yong H E, Zou W K, Song S Y. Effects of electron flow current density on flow impedance of magnetically insulated transmission lines [J]. Chin. Phys. Lett., 2011,28(28): 082901.
[14] Capua M S D, Pellinen D G. Propagation of power pulses in magnetically insulated vacuum transmission lines [J].Vacuum, 1979, 30(5): 3713-3720.
[15] 冯晓辉. 磁绝缘无损形成过程的理论研究 [D]. 绵阳:中国工程物理研究院, 2009.

均匀电荷密度下的磁绝缘理论研究

Study of magnetic insulation with uniform charge density

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