Statistical Characteristics of Scattered Radiation in Medium With Spatial-temporal Fluctuations of Electron Density and External Magnetic Field

George V. Jandieri, Natalia N. Zhukova, Irma G. Takidze, Ivane V. Jandieri

Department of Physics, Georgian Technical University, Georgian Technical University, Tbilisi, Georgia.
Department of Physics, Georgian Technical University, Tbilisi, Georgia.
Dynamics of Geophysical fields and Computing Geophysics, TSU M. Nodia Institute of Geophysics, Tbilisi, Georgia..

DOI: 10.4236/jemaa.2012.46034                

Abstract

Influence of temporal fluctuations of both electron density and external magnetic field fluctuations on scattered ordinary and extraordinary waves in magnetized plasma is investigated using the ray-(optics) method. Transport equation for frequency fluctuations of scattered radiation has been derived. Broadening of the spatial power spectrum and amplification of the intensity of frequency fluctuation taking into account geometry of the task and the features of turbulent magnetized plasma is analyzed for the anisotropic Gaussian correlation function using the remote sensing data. It is shown that spatial-temporal fluctuations of electron density and external magnetic field, anisotropy and angle of inclination of prolate irregularities relative to the external magnetic field may lead to the exponential amplification of the intensity of frequency fluctuations of scattered electromagnetic waves in the collisional magnetized plasma.

Keywords

Fluctuations, Correlation function, Scattering, Magnetized Plasma, Phase portrait, Extraordinary Wave

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	V. L. Frolov, N. V. Bakhmet’eva, V. V. Belikovich, G. G. Vetrogradov, V. G. Vatrogradov, G. P. Komrakov, D. S. Kotik, N. A. Mityakov, S. V. Polyakov, V. O. Rapoport, E. N.Sergeev, E. D. Tereshchenko, A. V. Tolmacheva, V. P. Uryadov and B. Z. Khudukon, “Modification of the Earth’s Ionosphere by High-Power High-Frequency Radio Waves,” Physics-Uspekhi, Vol. 50, No. 3, 2007, pp. 315-324. doi:10.1070/PU2007v050n03ABEH006282
[2]	Z.-S. Wu, H.-Y. Wei, R.-K. Yang and L.-X. Guo, “Study of Scintillation Considering Inner and Outer-Scales for Laser Beam Propagation on the Slant Path through the Atmospheric Turbulence,” Progress in Electromagnetics Research, PIER, Vol. 80, 2008, pp. 277-293. doi:10.2528/PIER07112505
[3]	V. G. Gavrilenko, A. V. Sarokin, G. V. Jandieri and V. G. Jandieri, “Some Properties of the Angular Power Distribution of Electromagnetic Waves Multiply Scattered in a Collisional Magnetized Turbulent Plasma,” Plasma Physics Report, Vol. 31, No. 7, 2005, pp. 604-615. doi:10.1134/1.1992588
[4]	G. V. Jandieri, A. Ishimaru, K. Yasumoto, A. G. Khantadze and V. G. Jandieri, “Angle-of-Arrival of Radio Waves Scattered by Turbulent Collisional Magnetized Plasma Layer,” International Journal of Microwave and Optical Technology, Vol. 4, No. 3, 2009, pp. 160-169.
[5]	G. V. Jandieri, A. Ishimaru, V. G. Jandieri, A. G. Khantadze and Z. M. Diasamidze, “Model Computations of Angular Power Spectra for Anisotropic Absorptive Turbulent Magnetized Plasma,” Progress in Electromagnetics Research, PIER, Vol. 70, 2007, pp. 307-328. doi:10.2528/PIER07013103
[6]	G. V. Jandieri, A. Ishimaru, N. N. Zhukova, T. N. Bzhalava and M. R. Diasamidze, “On the Influence of Fluctuations of the Direction of an External Magnetic Field an Phase and Amplitude Correlation Functions of scattered Radiation by Magnetized Plasma Slab,” Progress in Electromagnetics Research B, PIER B, Vol. 22, 2010, pp. 121 143. doi:10.2528/PIERB10051402
[7]	G. V. Jandieri, A. Ishimaru and V. G. Jandieri, “Depolarization Effects of Incoherently Scattered Electromagnetic Waves by Inhomogeneous Magnetized Plasma Slab,” Journal of Electromagnetic Analysis and Applications, Vol. 3, No. 11, 2011, pp. 471-478.
[8]	V. G. Gavrilenko, V. N. Konkov and N. A. Churilina, “On the Influence of Absorption on the Statistical Characteristics of Wave in Medium with Smooth Spatial-Temporal Fluctuations”, in Russian, Izv. Vuzov, Radiophysics, Vol. 21, No. 10, 1978, pp. 1537-1540.
[9]	V. L. Ginzburg, “Propagation of Electromagnetic Waves in Plasma,” Gordon and Beach, New York, 1961.
[10]	A. Ishimaru, “Wave Propagation and Scattering in Random Media, Vol. 2, Multiple Scattering, Turbulence,” Rough Surfaces and Remote Sensing, IEEE Press, Piscataway, 1997.
[11]	S. M. Rytov, Y. A. Kravtsov and V. I. Tatarskii, “Principles of Statistical Radiophysics. Vol. 4. Waves Propagation Through Random Media,” Springer, Berlin, 1989.
[12]	V. I. Tatarskii, “Wave Propagation in a Turbulent Medium,” McGraw-Hill, New York, 1961.
[13]	B. N. Gershman, L. M. Erukhimov and Y. Y. Yashin, “Wave phenomena in the Ionosphere and Space Plasma,” in Russian, Nauka, Moscow, 1984.
[14]	V. G. Gavrilenko, A. A. Semerikov and G. V. Jandieri, “On the Effect of Absorption on Multiple Wave Scattering in a Magnetized Turbulent Plasma,” Wave Random Media, Vol. 9, No. 3, 1999, pp. 427-440. doi:10.1088/0959-7174/9/3/310
[15]	H. Rishbeth and O. K. Garriott, “Introduction to Ionospheric Physics,” Academic Press, New York, 1969.
[16]	A. W. Wernik and C. H. Liu, “Ionospheric Irregularities Causing Scintillation of GHz Frequency Radio Signals,” Journal of Atmospheric and Terrestrial Physics, Vol. 36, No. 5, 1974, pp. 871-879. doi:10.1016/0021-9169(74)90032-4
[17]	G. V. Jandieri, A. Ishimaru and V. G. Jandieri, “A Radio Scintillation in the Turbulent Collision Magnetized Plasma,” Proceeding of the 2007 World Congress in Computer Science, Computer Engineering and Applied Computing, Las Vegas, 25-28 June 2007, pp. 189-195.