霍尔推力器鞘层电子与壁面碰撞频率及近壁传导电流研究
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- 英文论文题名：Study on Collision Frequency of Wall and Electron and Near-wall Conduction Current in Hall Thruster Sheath
- 论文作者：段萍 ; 刘广睿 ; 边兴宇 ; 曹安宁 ; 殷燕
- 英文论文作者：Duan Ping ; Liu Guangrui ; Cao Anning ; Bian Xingyu ; Yin Yan ; Department of Physics ; Dalian Maritime University
- 年：2015
- 作者机构：大连海事大学物理系;
- 论文关键词：鞘层 ; 碰撞频率 ; 近壁传导电流
- 英文论文关键词：Sheath ; Collision frequency ; Near-wall conduction current
- 会议召开时间：2015-08-12
- 会议录名称：静电放电：从地面新技术应用到空间卫星安全防护—中国物理学会第二十届全国静电学术会议论文集
- 语种：中文
- 分类号：V439.2
- 学会代码：WLJD
- 会议名称：静电放电 ; 从地面新技术应用到空间卫星安全防护—中国物理学会第二十届全国静电学术会议
- 会议地点：中国河北石家庄
- 主办单位：中国物理学会静电专业委员会
- 学会名称：中国物理学会静电专业委员会
- 页数：6
- 文件大小：669k
- 原文格式：D
- 会议级别：全国
摘要
本文针对霍尔推力器内等离子体与壁面材料相互作用形成的非中性鞘层区域建立二维物理模型,对鞘层内电子与壁面碰撞频率及近壁传导电流进行数值模拟研究。研究结果表明:电子与壁面碰撞频率随鞘层内电子数密度及电子温度的增加而升高,壁面材料的二次电子发射系数越高,电子与壁面碰撞频率越高,而磁场强度和离子入射速度对电子与壁面碰撞频率几乎无影响;随着鞘层内电子数密度的增加,近壁传导电流增加,但近壁传导电流峰值的径向位置没有改变。电子温度越高,近壁传导电流越大,同时,近壁传导电流峰值的径向位置发生改变。壁面材料二次电子发射系数越高,近壁传导电流越大,但磁场强度的改变对近壁传导电流没有影响。
In this paper, a two-dimensional physical model is established according to the non-neutral sheath formed by plasma interacted with wall material in Hall thruster, the collision frequency of wall and electrons and near-wall conduction current are studied using numerical simulation method. The results show that the collision frequency of wall and electrons increases with the increase of electron number density and electron temperature, the higher secondary electron emission of the wall materials is, the higher collision frequency of wall and electrons is, but magnetic field and ion incidence velocity have little influence on collision frequency of wall and electrons. The increase of electron number density leads to the increase of the near-wall conduction current, however, does not affect the position of peaks of the near-wall conduction current. Near-wall conduction current increases with the increase of electron temperature and the position of the peaks of near-wall conduction current is changed. The higher secondary electron emission of the wall materials is, the higher the near-wall conduction current is, but the magnetic field has no influence on near-wall conduction current.
In this paper, a two-dimensional physical model is established according to the non-neutral sheath formed by plasma interacted with wall material in Hall thruster, the collision frequency of wall and electrons and near-wall conduction current are studied using numerical simulation method. The results show that the collision frequency of wall and electrons increases with the increase of electron number density and electron temperature, the higher secondary electron emission of the wall materials is, the higher collision frequency of wall and electrons is, but magnetic field and ion incidence velocity have little influence on collision frequency of wall and electrons. The increase of electron number density leads to the increase of the near-wall conduction current, however, does not affect the position of peaks of the near-wall conduction current. Near-wall conduction current increases with the increase of electron temperature and the position of the peaks of near-wall conduction current is changed. The higher secondary electron emission of the wall materials is, the higher the near-wall conduction current is, but the magnetic field has no influence on near-wall conduction current.
引文
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[2]毛根旺,韩先伟,杨涓,何洪庆.推进技术,2000,21(5)1-5,Mao Genwang,Han Xianwei,Yang Juan,He Hongqing.Journal of Propulsion Technology,2000,21(5)1-5
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[4]毛根旺,付西鹏,陈茂林.月球探测器电推进系统的应用研究[J].机械科学与技术,2008,27(7):853-856.毛根旺,Mao Genwang,Fu Xipeng,Chen Maolin.Application of an Electric Propulsion System to a Lunar Detector[J].Mechanical Science and Technology for Aero space Engineering,2008,27(7):853-856.
[5]Dmytro Sydorenko2006 Particle-in-Cell Simulations of Electron Dynamics in Low Pressure Discharges with Magnetic Fields(Saskatchewan University of Saskatchewan)16-17.
[6]D.Sydorenko,A.Smolyakov,et al.Modification of electron velocity distribution in bounded plasmas by secondary electron emission[J].IEEE Transactions on Plasma Science,2006,34(3):815-824.
[7]D.Sydorenko,A.Smolyakov,I.Kaganovich,et.al.Plasma-sheath instability in Hall thrusters due to periodic modulation of the energy of secondary electrons in cyclotron motion[J].Physics of Plasmas,2008,15(5):053506.
[8]Kaganovich I D,Raitses Y,Sydorenko D,et al.Kinetic effects in a Hall thruster discharge[J].Physics of Plasmas,2007,14(5):490-497.
[9]于达仁,卿绍伟,王晓钢,等.电子温度各向异性对霍尔推力器BN绝缘壁面鞘层特性的影响[J].物理学报,2011,60(2):429-438.Yu Daren,Qing Shaowei,Wang Xiaogang,Ding Yongjie,Duan Ping.Ef fect of electron temperature anisotropy on BN dielectric wall sheath characterstics in Hall thruster[J].Acta Physica Sinica,2011,60(2):429-438.
[10]于达仁,张凤奎,李鸿,刘辉.霍尔推进器中振荡鞘层对电子与壁面碰撞频率的影响研究[J].物理学报,2009,58(3):1844-1848.Yu Daren,Zhang Fengkui,Li Hong,Liu Hui.Effect of electron temperature anisotropy on BN dielectric wall sheath characterstics in Hall thruster[J].Acta.Phys.Sin,2011,60(2):429-438.
[11]段萍,覃海娟,周新维,等.霍尔推进器壁面材料二次电子发射及鞘层特性[J].物理学报,2014,63(8):85204-085204.Duan Ping,Qin Haijuan,Zhou Xinwei,et.al.Characteristics of wall materials secondary electron emission and sheath in Hall thruster[J].Acta.Phys.sin,2014,63(8):85204-085204.
[12]Duan,Ping,Qin.Characteristics of wall sheath and secondary electron emission under different electron temperatures in a Hall thruster[J].Chinese Physics B,2014,23(7):510-515.
[13]Morozov A I,Savel17Ev V V.Structure of Steady-State Debye Layers in a Low-Density Plasma near a Dielectric Surface[J].Plasma Physics Reports,2004,30(4):299-306.
[14]D.Bohm.The characterister of electrical discharge in magnetic field.Mc Graw-Hill,New York.1949:65
[15]B.Meezan and A.Cappelli.Kinetic study of wall collisions in a coaxial Hall discharge.Physical Review E.2002,66(3)036401-1-10
[16]B.Meezan,A.Hargus and A.Cappelli.Anomalous electron mobility in a coaxial Hall discharge plasma.Physical Review E.2001,63(2):026410-1-7
[17]张凤奎.霍尔推力器绝缘壁面鞘层动态特性及其对近壁传导的影响[D].哈尔滨:哈尔滨工业大学,2009.Zhang Fengkui.Hall thruster dynamic characteristics of wall insulation sheath layer and its influence on the near wall conduction[D].Harbin:Harbin Industrial of Technology,2009
[18]疏舒.壁面二次电子发射对STP鞘层及近壁传导的影响研究[D].哈尔滨,哈尔滨工业大学,2006.Shu Shu.The influence of secondary electron emission on the sheath and near wall conductivity in stationary plasma thruster[D].Harbin:Harbin Industrial of Technology,2006.
[19]Barral S,Makowski K,Peradzyński Z,et al.Wall Material Effects in Stationary Plasma Thrusters.II.Near-Wall and In-Wall Conductivity[J].Physics of Plasmas,2003,10(10):4137-4152.
[20]A.I.Bugrova,A.V.Desyatskov,and A.I.Morozov.Electron distribution function in a Hall accelerator[J].Journal of Plasma Physics,1992,18:501.
[21]G.Guerrini,C.Michaut,M.Dudeck,et.al.Characterization of plasma inside the SPT-50 channel by electrostatic Probes[C].25th International Electric Propulsion Conference,1997,IEPC-97-53:326-332.
[22]傅竹风,胡友秋.空间等离子体数值模拟[M].安徽科学技术出版社,1995:446-448。Fu Zufeng,Hu Youqiu.Space Plasma Numerical Simulation[M].Anhui Science&Technology Publishing House,1995.
[23]Dunaevsky A,Raitses Y,Fisch N J.Secondary electron emission from dielectric materials of a Hall thruster with segmented electrodes[J].Physics of Plasmas(1994-present),2003,10(6):2003.
[2]毛根旺,韩先伟,杨涓,何洪庆.推进技术,2000,21(5)1-5,Mao Genwang,Han Xianwei,Yang Juan,He Hongqing.Journal of Propulsion Technology,2000,21(5)1-5
[3]Brandhorst H W,O'Neill M J,Jones P A,et al.POWOW—an alternative power source for Mars exploration[J].Acta Astronautica,2002,51(1):57–62.
[4]毛根旺,付西鹏,陈茂林.月球探测器电推进系统的应用研究[J].机械科学与技术,2008,27(7):853-856.毛根旺,Mao Genwang,Fu Xipeng,Chen Maolin.Application of an Electric Propulsion System to a Lunar Detector[J].Mechanical Science and Technology for Aero space Engineering,2008,27(7):853-856.
[5]Dmytro Sydorenko2006 Particle-in-Cell Simulations of Electron Dynamics in Low Pressure Discharges with Magnetic Fields(Saskatchewan University of Saskatchewan)16-17.
[6]D.Sydorenko,A.Smolyakov,et al.Modification of electron velocity distribution in bounded plasmas by secondary electron emission[J].IEEE Transactions on Plasma Science,2006,34(3):815-824.
[7]D.Sydorenko,A.Smolyakov,I.Kaganovich,et.al.Plasma-sheath instability in Hall thrusters due to periodic modulation of the energy of secondary electrons in cyclotron motion[J].Physics of Plasmas,2008,15(5):053506.
[8]Kaganovich I D,Raitses Y,Sydorenko D,et al.Kinetic effects in a Hall thruster discharge[J].Physics of Plasmas,2007,14(5):490-497.
[9]于达仁,卿绍伟,王晓钢,等.电子温度各向异性对霍尔推力器BN绝缘壁面鞘层特性的影响[J].物理学报,2011,60(2):429-438.Yu Daren,Qing Shaowei,Wang Xiaogang,Ding Yongjie,Duan Ping.Ef fect of electron temperature anisotropy on BN dielectric wall sheath characterstics in Hall thruster[J].Acta Physica Sinica,2011,60(2):429-438.
[10]于达仁,张凤奎,李鸿,刘辉.霍尔推进器中振荡鞘层对电子与壁面碰撞频率的影响研究[J].物理学报,2009,58(3):1844-1848.Yu Daren,Zhang Fengkui,Li Hong,Liu Hui.Effect of electron temperature anisotropy on BN dielectric wall sheath characterstics in Hall thruster[J].Acta.Phys.Sin,2011,60(2):429-438.
[11]段萍,覃海娟,周新维,等.霍尔推进器壁面材料二次电子发射及鞘层特性[J].物理学报,2014,63(8):85204-085204.Duan Ping,Qin Haijuan,Zhou Xinwei,et.al.Characteristics of wall materials secondary electron emission and sheath in Hall thruster[J].Acta.Phys.sin,2014,63(8):85204-085204.
[12]Duan,Ping,Qin.Characteristics of wall sheath and secondary electron emission under different electron temperatures in a Hall thruster[J].Chinese Physics B,2014,23(7):510-515.
[13]Morozov A I,Savel17Ev V V.Structure of Steady-State Debye Layers in a Low-Density Plasma near a Dielectric Surface[J].Plasma Physics Reports,2004,30(4):299-306.
[14]D.Bohm.The characterister of electrical discharge in magnetic field.Mc Graw-Hill,New York.1949:65
[15]B.Meezan and A.Cappelli.Kinetic study of wall collisions in a coaxial Hall discharge.Physical Review E.2002,66(3)036401-1-10
[16]B.Meezan,A.Hargus and A.Cappelli.Anomalous electron mobility in a coaxial Hall discharge plasma.Physical Review E.2001,63(2):026410-1-7
[17]张凤奎.霍尔推力器绝缘壁面鞘层动态特性及其对近壁传导的影响[D].哈尔滨:哈尔滨工业大学,2009.Zhang Fengkui.Hall thruster dynamic characteristics of wall insulation sheath layer and its influence on the near wall conduction[D].Harbin:Harbin Industrial of Technology,2009
[18]疏舒.壁面二次电子发射对STP鞘层及近壁传导的影响研究[D].哈尔滨,哈尔滨工业大学,2006.Shu Shu.The influence of secondary electron emission on the sheath and near wall conductivity in stationary plasma thruster[D].Harbin:Harbin Industrial of Technology,2006.
[19]Barral S,Makowski K,Peradzyński Z,et al.Wall Material Effects in Stationary Plasma Thrusters.II.Near-Wall and In-Wall Conductivity[J].Physics of Plasmas,2003,10(10):4137-4152.
[20]A.I.Bugrova,A.V.Desyatskov,and A.I.Morozov.Electron distribution function in a Hall accelerator[J].Journal of Plasma Physics,1992,18:501.
[21]G.Guerrini,C.Michaut,M.Dudeck,et.al.Characterization of plasma inside the SPT-50 channel by electrostatic Probes[C].25th International Electric Propulsion Conference,1997,IEPC-97-53:326-332.
[22]傅竹风,胡友秋.空间等离子体数值模拟[M].安徽科学技术出版社,1995:446-448。Fu Zufeng,Hu Youqiu.Space Plasma Numerical Simulation[M].Anhui Science&Technology Publishing House,1995.
[23]Dunaevsky A,Raitses Y,Fisch N J.Secondary electron emission from dielectric materials of a Hall thruster with segmented electrodes[J].Physics of Plasmas(1994-present),2003,10(6):2003.