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本文通过提出电势影响因子的概念描述了尘埃粒子与背景等离子体之间的电势差对等离子体电导率的影响. 电势影响因子与尘埃粒子的电荷数、数密度、半径以及背景等离子体电子数密度成正比, 而与背景等离子体电子温度成反比. 在考虑尘埃粒子电势影响下, 推导和完善了尘埃等离子体的复电导率模型. 选取火箭喷焰为典型实例, 分析比较了微波和近红外波段范围内, 考虑和不考虑电势差影响两种情况下的复电导率. 结果表明, 在给定的尘埃等离子体参数条件下, 随着入射电磁波频率的增大, 电势差对复电导率的影响在减小, 当入射频率增加至给定的近红外区域时, 电势差对复电导率虚部的影响可以忽略.In this paper, the concept of electrical potential influencing factor is proposed to describe the effect of electrical potential difference between the dust particle and background plasma on conductivity, based on which the conductivity model of dusty plasma is improved. The electrical potential influencing factor is directly proportional to the charge number, number density, radius of the dust particle, and the electron number density of the background plasma. Meanwhile, it is inversely proportional to the electron temperature of the background plasma. Taking rocket exhaust plume for example, the conductivities with and without considering potential difference are given both in the microwave and near infrared regions. In the given dusty plasma parameters condition, the influence of electrical potential difference on electrical conductivity reduces as the incident frequency increases. When the frequency increases to the near-infrared light region, the influence of electrical potential difference on the imaginary part of the conductivity can be ignored.
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Keywords:
- plasma /
- dust particle /
- conductivity /
- electrical potential impact factor
[1] Liu J, Zhou S B, Xu C G 2008 Numerical simulation and applications of combustion phenomena in supersonic flow (Chang Sha: National University of Defense Technology Press) (in Chinese) [刘君, 周松柏, 徐春光 2008 超声速流动中燃烧现象的数值模拟方法及应用 (长沙: 国防科技大学出版社)]
[2] Wang J 2006 Master thesis (Xidian University)(in Chinese) [王菊 2006 硕士学位论文 (西安电子科技大学)]
[3] Whipple E C 1981 Rep. Prog. Phys. 44 1197
[4] Goertz C K 1989 Rev. Geophys. 27 271
[5] J Winter 1998 Plasma Phys. Control. Fusion 40 1201
[6] J Winter 2004 Plasma Phys. Control. Fusion 46 B583
[7] Roth R M, Spears K G, Stein G D, Wong D 1985 Appl. Phys. Lett. 46 253
[8] Shukla P K, Mamun A A 2002 Introduction to dusty plasma physics, Institute of physics publishing, London.
[9] Tsytovich V N 1992 Physica Scripta 45 521
[10] Ma J X, Yu M Y 1994 Phys. Rev. E 50 2431
[11] Thomas H, Morfill G E, Demmel V 1994 Phys. Rev. Lett. 73 652
[12] Shukla P K, Stenflo L 1992 Astrophys. Space Sci. 190 23
[13] Vladimirov S V 1994 Phys. Rev. E 50 1422
[14] Shi Y X, Ge D B, Wu J 2007 Chin. J. Geophys. 50 1005 (in Chinese) [石雁祥, 葛德彪, 吴健 2007 地球物理学报 50 1005]
[15] Li F, Li L L, S Q 2004 Science in China Series E 34 832 (in Chinese) [李芳, 李廉林, 隋强 2004 中国科学E辑 34 832]
[16] Shi Y X, Wu J, Ge D B 2009 Acta Phys. Sin. 58 5507 (in Chinese) [石雁祥, 吴健, 葛德彪 2009 物理学报 58 5507]
[17] Ginzburg V L 1978 The propagation of electromagnetic waves in plasma (Beijing: Science Press) (in Chinese) [电磁波在等离子体中的传播,(苏) 金兹堡著, 钱善瑎译 1978 北京: 科学出版社]
[18] Abe T, Fujita K, Ogawa H, Funaki I 2000 Am. Inst. Aeronaut. Astronaut. 2484
[19] Li J T, Guo L X, Hu H Q, Zhang B C 2010 Chin. J. Geophys. 53 2829 (in Chinese) [李江挺, 郭立新, 胡红桥, 张北辰 2010 地球物理学报 53 2829]
[20] de Angelis U, Marmolino C, Tsytovich V N 2005 Phys. Rev. Lett. 95 095003
[21] Tsytovich V N, de Angelis U 1993 Phys. Rev. E 48 3930
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[1] Liu J, Zhou S B, Xu C G 2008 Numerical simulation and applications of combustion phenomena in supersonic flow (Chang Sha: National University of Defense Technology Press) (in Chinese) [刘君, 周松柏, 徐春光 2008 超声速流动中燃烧现象的数值模拟方法及应用 (长沙: 国防科技大学出版社)]
[2] Wang J 2006 Master thesis (Xidian University)(in Chinese) [王菊 2006 硕士学位论文 (西安电子科技大学)]
[3] Whipple E C 1981 Rep. Prog. Phys. 44 1197
[4] Goertz C K 1989 Rev. Geophys. 27 271
[5] J Winter 1998 Plasma Phys. Control. Fusion 40 1201
[6] J Winter 2004 Plasma Phys. Control. Fusion 46 B583
[7] Roth R M, Spears K G, Stein G D, Wong D 1985 Appl. Phys. Lett. 46 253
[8] Shukla P K, Mamun A A 2002 Introduction to dusty plasma physics, Institute of physics publishing, London.
[9] Tsytovich V N 1992 Physica Scripta 45 521
[10] Ma J X, Yu M Y 1994 Phys. Rev. E 50 2431
[11] Thomas H, Morfill G E, Demmel V 1994 Phys. Rev. Lett. 73 652
[12] Shukla P K, Stenflo L 1992 Astrophys. Space Sci. 190 23
[13] Vladimirov S V 1994 Phys. Rev. E 50 1422
[14] Shi Y X, Ge D B, Wu J 2007 Chin. J. Geophys. 50 1005 (in Chinese) [石雁祥, 葛德彪, 吴健 2007 地球物理学报 50 1005]
[15] Li F, Li L L, S Q 2004 Science in China Series E 34 832 (in Chinese) [李芳, 李廉林, 隋强 2004 中国科学E辑 34 832]
[16] Shi Y X, Wu J, Ge D B 2009 Acta Phys. Sin. 58 5507 (in Chinese) [石雁祥, 吴健, 葛德彪 2009 物理学报 58 5507]
[17] Ginzburg V L 1978 The propagation of electromagnetic waves in plasma (Beijing: Science Press) (in Chinese) [电磁波在等离子体中的传播,(苏) 金兹堡著, 钱善瑎译 1978 北京: 科学出版社]
[18] Abe T, Fujita K, Ogawa H, Funaki I 2000 Am. Inst. Aeronaut. Astronaut. 2484
[19] Li J T, Guo L X, Hu H Q, Zhang B C 2010 Chin. J. Geophys. 53 2829 (in Chinese) [李江挺, 郭立新, 胡红桥, 张北辰 2010 地球物理学报 53 2829]
[20] de Angelis U, Marmolino C, Tsytovich V N 2005 Phys. Rev. Lett. 95 095003
[21] Tsytovich V N, de Angelis U 1993 Phys. Rev. E 48 3930
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