{"title":"Theoretical comparison of effects of different cross fields on low pressure DC glow discharge","authors":"Shen Gao","doi":"10.1016/j.elstat.2024.103900","DOIUrl":null,"url":null,"abstract":"<div><p>the mathematical models of glow discharge in transverse (y-direction) and axial (z-direction) magnetic fields are established in this paper. Firstly, Paschen's law is modified for different cross fields. The results show that the breakdown voltage first decreases and then increases with the increase of y-direction magnetic field at the same pressure. The breakdown voltage of glow discharge in z-direction magnetic field increases with the increase of magnetic field. Secondly, the effects of y-magnetic field and z-magnetic field on glow discharge are compared and analyzed by using the modified ionization coefficient. The results show that the plasma density has an extreme value under the combined action of y-direction magnetic field and air pressure. At the same pressure, the plasma density first increases and then decreases with the increase of magnetic field. The larger the magnetic field, the more obvious the plasma attenuation. In the z-direction magnetic field, the plasma density increases with the increase of air pressure or magnetic field.</p></div>","PeriodicalId":54842,"journal":{"name":"Journal of Electrostatics","volume":"128 ","pages":"Article 103900"},"PeriodicalIF":1.9000,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Electrostatics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S030438862400007X","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
the mathematical models of glow discharge in transverse (y-direction) and axial (z-direction) magnetic fields are established in this paper. Firstly, Paschen's law is modified for different cross fields. The results show that the breakdown voltage first decreases and then increases with the increase of y-direction magnetic field at the same pressure. The breakdown voltage of glow discharge in z-direction magnetic field increases with the increase of magnetic field. Secondly, the effects of y-magnetic field and z-magnetic field on glow discharge are compared and analyzed by using the modified ionization coefficient. The results show that the plasma density has an extreme value under the combined action of y-direction magnetic field and air pressure. At the same pressure, the plasma density first increases and then decreases with the increase of magnetic field. The larger the magnetic field, the more obvious the plasma attenuation. In the z-direction magnetic field, the plasma density increases with the increase of air pressure or magnetic field.
本文建立了横向（y 方向）和轴向（z 方向）磁场中辉光放电的数学模型。首先，针对不同的横向磁场对帕申定律进行了修正。结果表明，在相同压力下，随着 y 方向磁场的增大，击穿电压先减小后增大。Z 向磁场中辉光放电的击穿电压随着磁场的增大而增大。其次，利用修正电离系数比较分析了 y 方向磁场和 z 方向磁场对辉光放电的影响。结果表明，在 y 方向磁场和气压的共同作用下，等离子体密度达到极值。在相同压力下，随着磁场的增加，等离子体密度先增大后减小。磁场越大，等离子体衰减越明显。在 z 向磁场中，等离子体密度随气压或磁场的增加而增加。
期刊介绍：
The Journal of Electrostatics is the leading forum for publishing research findings that advance knowledge in the field of electrostatics. We invite submissions in the following areas:
Electrostatic charge separation processes.
Electrostatic manipulation of particles, droplets, and biological cells.
Electrostatically driven or controlled fluid flow.
Electrostatics in the gas phase.
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