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论文:2012,Vol:30,Issue(3):326-332 |
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引用本文： |
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杨涓, 王雲民, 马艳杰, 王阳, 李鹏飞. 不同磁路结构ECRIT放电室实验研究[J]. 西北工业大学 |
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Yang Juan, Wang Yunmin, Ma Yanjie, Wang Yang, Li Pengfei. Experimental Research on Discharge Chamber of ECRIT with Two Kinds of Magnetic Circuit[J]. Northwestern polytechnical university |
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| 不同磁路结构ECRIT放电室实验研究 |
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| 杨涓, 王雲民, 马艳杰, 王阳, 李鹏飞 |
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| 西北工业大学 航天学院,陕西 西安 710072 |
| 摘要: |
| 电子回旋共振离子推力器(ECRIT)属于静电型推力器,其工作原理是利用微波能和圆台型放电室内永磁体环产生的外加磁场产生高电离度的电子回旋共振(ECR)等离子体,再通过屏栅和加速栅之间的陡峭电势差加速其中的离子,从而产生推力。由于ECRIT采用了无阴极放电方案,因而它具有寿命长、结构简单的特点。ECRIT放电室内恰当的放电室磁路结构对于推力器的可靠工作非常重要,一方面它要产生满足ECR等离子体形成需要的磁场位形;另一方面要使栅极附近的等离子体分布比较均匀,从而提高推力密度,降低离子对栅极的冲刷;再者还要求放电室能在比较高的能量利用效率下工作。在圆台型放电室内,文章采用了两种磁路结构,分别开展了真空环境下放电室内ECR等离子体的产生实验;认为放电室中的离子未被磁化,采用朗缪尔探针直接诊断两种磁路结构放电室内的电子温度和离子密度,分析氩等离子体场的结构。实验的结果是:靠近放电室大端面的永磁体环能够使推力器的能量利用效率提高,同时能够使栅极附近的等离子体分布更均匀,从而提高推力密度、降低离子对栅极的冲刷。 |
| 关键词:
电子回旋共振
离子推力器
探针诊断
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| Experimental Research on Discharge Chamber of ECRIT with Two Kinds of Magnetic Circuit |
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| Yang Juan, Wang Yunmin, Ma Yanjie, Wang Yang, Li Pengfei |
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| College of Astronautics,Northwestern Polytechnical University,Xi'an 710072,China |
| Abstract: |
| Electron cyclotron resonance ion thruster (ECRIT) runs on ECR plasma which is produced by micro-wave energy and magnetic field from two permanent magnetic rings inside the discharge chamber. The ions in ECRplasma are extracted by the sharp potential gap of screen and acceleration grids to produce thrust. ECRIT has theadvantages of high specific impulse,electrodelessness and high durability,which make the thruster competitive inthe applications of deep space probe and long life satellite. Sections 1 through 3 explain the experimental researchmentioned in the title,whose core consists of: " Appropriate magnetic circuit inside the discharge chamber ofECRIT is important for the thruster reliable operation in that it must generate the magnetic field required by ECRplasma generation and drive plasma density in a uniform distribution near the surface of screen grid for high thrustdensity and low grid erosion by the accelerated ions,thus operating the discharge chamber with a high efficiency.Within the tapered discharge chamber,two types of magnetic circuit are used to produce argon ECR plasma,ofwhich the electron temperature and ion density are diagnosed by Langmuir probe. " The experimental results,givenin Table 1 and Figs. 6, 8 and 9,and their analysis,show preliminarily that,when the magnetic rings approach themajor end surface of the discharge, the efficiency and ion density distribution near the screen grid can be improved. |
| Key words:
lectron cyclotron resonance
ion propulsion
probe diagnostics
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| 收稿日期: 2011-06-04
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(11075128)资助 |
| 通讯作者:
Email： |
| 作者简介: 杨涓(1963-),女,西北工业大学教授,主要从事空间推进技术研究。
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| 作者相关文章 |
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| 杨涓 在本刊中的所有文章 |
| 王雲民 在本刊中的所有文章 |
| 马艳杰 在本刊中的所有文章 |
| 王阳 在本刊中的所有文章 |
| 李鹏飞 在本刊中的所有文章 |
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[3] 叶 超.低气压低温等离子体诊断原理与技术.科学出版社，2010，1
[4] 杨 涓，石 峰，杨铁链，孟志强.电子回旋共振离子推力器放电室等离子体数值模拟.物理学报，2010，59(12): 1-6Yang J，Shi F，Yang T L，Meng Z Q.Numerical Simulation on the Plasma Field within Discharge Chamber of Electron Cyclo-tron Resonance Ion Thruster.Acta Physica Sinica，2010，59(12): 1-6 (in Chinese)
[5] 杨铁链，杨 涓，毛根旺，夏广庆.电子回旋共振推力器放电室内磁场与微波电磁场分析.中国空间科学技术.2009，2:1-7Yang T L，Yang J，Mao G W，Xia G Q.Magnetic and High-Frequency Electromagentic Field Analysis in Electron CyclotronResonance Thruster.Chinese Space Science and Technlogy，2009，2: 1-7 (in Chinese) |
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