| 电子发射对稳态等离子体鞘层影响的理论研究和数值模拟 |
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| 引用本文： | 孟显,王友年,马腾才.电子发射对稳态等离子体鞘层影响的理论研究和数值模拟[J].强激光与粒子束,2000,12(3):358-362. |
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| 作者姓名： | 孟显 王友年 马腾才 |
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| 作者单位： | 大连理工大学三束材料改性国家重点实验室，大连，116023 |
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| 基金项目： | 国家自然科学基金、教育部重点科技项目及高等学校博士点学科专项科研基金资助课题 |
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| 摘 要： | 建立了一套非线性自洽的流体力学方程组，研究了电子发射对稳态等离子体鞘层的影响，并分别考虑了发射电子及离子同中性原子的弹性和非弹性碰撞过程。数值结果表明：发射电子的初始束流密度及中性气体密度是描述鞘层空间演化的两个最关键的物理量，特别是发射电子的存在使得鞘层厚度变薄。
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| 关 键 词： | 径向探针 圈图测量 面向对象程序设计 |
| 文章编号： | 1001-4322(2000)03-0358-05 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 2000年1月15日 |
THE THEORETICAL STUDY AND NUMERICAL SIMULATIONFOR THE EFFECTS OF THE ELECTRON EMISSIONON THE STEADY-STATE SHEATHS |
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| MENG Xian,WANG You-nian,MA Teng-cai State Key Laboratory for Materials Modification by Laser,Ion and Electron Beams,Dalian university of Technology,Dalian.THE THEORETICAL STUDY AND NUMERICAL SIMULATIONFOR THE EFFECTS OF THE ELECTRON EMISSIONON THE STEADY-STATE SHEATHS[J].High Power Laser and Particle Beams,2000,12(3):358-362. |
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| Authors: | MENG Xian WANG You-nian MA Teng-cai State Key Laboratory for Materials Modification by Laser Ion and Electron Beams Dalian university of Technology Dalian |
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| Institution: | MENG Xian,WANG You-nian,MA Teng-cai State Key Laboratory for Materials Modification by Laser,Ion and Electron Beams,Dalian university of Technology,Dalian 116023 |
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| Abstract: | A hydrodynamics model was used in this paper to study the effects of the electron emission on the steady-state sheaths, which includes the emitted electron-neutral atom collisions and the ion-neutral atom collisions. Numerical results show that the initial emitted electron bean-current density and the neutral gas density are two important physics quantities affecting the sheath parameters, such as the ion density, ion current density, and the sheath electric field. |
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| Keywords: | emitted electrons beam current density plasma sheath |
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