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高密度尘埃等离子体的非相干散射理论研究

徐彬 李辉 王占阁 许正文 吴健

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高密度尘埃等离子体的非相干散射理论研究

徐彬, 李辉, 王占阁, 许正文, 吴健

Study on incoherent scatter theory of high density dusty plasma

Xu Bin, Li Hui, Wang Zhan-Ge, Xu Zheng-Wen, Wu Jian
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  • 将带电尘埃粒子的影响引入到非相干散射理论中,建立了包含电子、离子和尘埃组分的尘埃等离子体非相干散射理论模型.对火箭喷焰高密度尘埃等离子体条件下,离子谐振区和尘埃谐振区的非相干散射谱线进行了计算,讨论了尘埃粒径、温度和密度对谱线结构的影响,获得了尘埃颗粒影响非相干散射回波特征的基本物理规律.
    Incoherent scatter radar is one of the most important detection instruments of the space plasma. But because of the low dust density in natural space plasma, the contribution of charged dust to incoherent scatter spectrum can be completely ignored, therefore the incoherent scattering theory has not appeared in dusty plasma. In the solid rocket plume, the propellant combustion can form a large number of nanometer- and micronmeter-sized dusty particles, and produce a high electron density from high temperature ionization, which makes considerable contributionto charged dusty particles with the high density. Therefore, we develop the incoherent scattering theory of dusty plasma in order to calculate the scattering characteristics of high density dusty plasma produced by rocket plume, for example. The theoretical model including electrons, ions and dusty particles is established by combining effects of charged dusty particles. The incoherent scatter spectral lines of ion resonance region and dust resonance regionare calculated. The effects of dusty particle radius, temperature and density on spectral line structure are discussed. With the increases of dusty particle radius and density, the amplitude of power spectrum increases. With the increase of dust temperature, the amplitude of power spectrum decreases. In the dust resonance region, the control mechanism of dust in spectrum is similar to that of the ions. With the increase of particle size (mass) and decrease of the temperature, the spectrum width narrows, and amplitude and area increase with the increase of density. But in the ion resonance region, the dust control mechanism is completely different, and the influence of the dust on ion line is in the way of attracting ions. So with the increase of dust density, ion line characteristics do not show that the area increases, and dust controls ions by adjusting the Debye radius or electrostatic shielding ball size. By comparing the ion lines with and without dust under the same parameters conditions, the amplitude of the ion line with dust is much larger than that without dust, and the resonance frequency of the ion line is greatly changed. With the dust particles of a relatively high density, one can enhance the ion line, hence the incoherent scattering phenomenon can be more easily observed in rocket plume. On the other hand, due to significant changes of frequency and amplitude in the ion line spectrum, the incoherent scattering inversion method based on the traditional theory will cause a large error in the inversion parameter, even a failure of parameter retrieval. The incoherent scattering theory and relevant physical laws of dusty plasma are presented, which are of great significance for establishing the incoherent scattering theory system and studying the rocket plume parameters.
      通信作者: 王占阁, xiaogezi2@126.com
    • 基金项目: 国家自然科学基金(批准号:41004065,41104108,61601419,11672068)和电波环境特性及模化技术国防重点实验室基金资助的课题.
      Corresponding author: Wang Zhan-Ge, xiaogezi2@126.com
    • Funds: Project supported by the National Natural Science Foundation of China (Grant Nos.41004065,41104108,61601419,11672068) and the National Key Laboratory of Electromagnetic Environment,China.
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    Xu B, Wu Z S, Wu J, Xue K 2009 Acta Phys. Sin. 58 736 (in Chinese)[徐彬, 吴振森, 吴健, 薛昆2009 物理学报58 736]

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    Xu B, Wang Z G, Xue K, Wu J, Wu Z S, Wu J, Yan Y B 2010 J. Atmos. Sol. Terr. Phys. 72 492

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    Shi Y X 2008 Ph. D. Dissertation (Xi'an:Xidian University) (in Chinese)[石雁祥 2008 博士学位论文(西安:西安电子科技大学)]

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    Li H, Wu J, Zhou Z X, Yuan C X 2016 Phys. Plasma 23 073702

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    Gordon W E 1958 Proc. IRE 46 1824

    [2]

    Fejer J A 1960 Can. J. Phys. 38 1114

    [3]

    Dougherty J P, Farley D T 1960 Proc. Roy. Soc. London A 259 79

    [4]

    Dougherty J P, Farley D T 1963 J. Geophys. Res. 68 5473

    [5]

    Dougherty J P, Farley D T 1966 J. Geophys. Res. 71 4091

    [6]

    Salpeter E E 1960 Phys. Rev. 120 1528

    [7]

    Salpeter E E 1961 Phys. Rev. 122 1663

    [8]

    Hagfors T 1961 J. Geophys. Res. 66 1699

    [9]

    Evans J V 1969 Proc. IEEE 57 496

    [10]

    Sheffield J 1975 Plasma Scattering of Electromagnetic Radiation (New York:Academic Press) pp113-128

    [11]

    Raman R S, St-Maurice J P, Ong R S B 1981 J. Geophys. Res. 86 4751

    [12]

    Hubert D, Lathuillere C 1989 J. Geophys. Res. 94 3653

    [13]

    Suvanto K 1988 Radio Sci. 23 989

    [14]

    Suvanto K 1990 Plan. Space Sci. 38 903

    [15]

    Gurevich A V 1978 Nonlinear Phenomena in the Ionosphere (Berlin:Springer-Verlag) pp58-82

    [16]

    Xu B, Wu Z S, Wu J, Xue K 2009 Acta Phys. Sin. 58 736 (in Chinese)[徐彬, 吴振森, 吴健, 薛昆2009 物理学报58 736]

    [17]

    Xu B, Wu Z S, Wu J, Xue K 2009 Sci. China E 52 1112

    [18]

    Gurevich A V, Hagfors T, Carlson H, Lukyanov A V, Zybin K P 1998 Phy. Lett. A 246 335

    [19]

    Gustavsson B 2005 Ann. Geophys. 23 1747

    [20]

    Mishin E, Carlson H C, Hagfors T 2000 Geophys. Res. Lett. 27 2857

    [21]

    Xu B, Wang Z G, Xue K, Wu J, Wu Z S, Wu J, Yan Y B 2010 J. Atmos. Sol. Terr. Phys. 72 492

    [22]

    Shi Y X 2008 Ph. D. Dissertation (Xi'an:Xidian University) (in Chinese)[石雁祥 2008 博士学位论文(西安:西安电子科技大学)]

    [23]

    Li H, Wu J, Zhou Z X, Yuan C X 2016 Phys. Plasma 23 073702

    [24]

    Li H, Wu J, Zhou Z X, Yuan C X, Jia J S 2016 Phys. Plasma 23 073301

    [25]

    Li H, Wu J, Zhou Z X, Yuan C X 2016 Phys. Lett. A 380 2540

    [26]

    Li H, Wu J, Zhou Z X 2016 Ann. Geophys. 34 117

    [27]

    Rapp M, Lübken F J 2004 Atmos. Chem. Phys. 4 2601

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出版历程
  • 收稿日期:  2016-09-23
  • 修回日期:  2016-10-28
  • 刊出日期:  2017-02-05

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