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A Study of Bit Condition for Generation Rx -Mode Waves: Interaction of Particles with Z/UH-Mode Waves | ||
| فیزیک زمین و فضا | ||
| مقاله 8، دوره 43، شماره 4، دی 1396، صفحه 97-102 اصل مقاله (416.78 K) | ||
| شناسه دیجیتال (DOI): 10.22059/jesphys.2017.244677.1006937 | ||
| نویسنده | ||
| Mohammad Javad Kalaee* | ||
| Assistant Professor, Department of Space Physics, Institute of Geophysics, University of Tehran, Iran | ||
| چکیده | ||
| Interactions of charge particles with electromagnetic waves have important effects (linear and nonlinear) on the propagation of electromagnetic waves, and it can somewhat play a role in generation of the new mode waves. Besides, the particle energies can play an important role in causing instability in plasma. The values of parallel energy of the particles have been calculated so that they can satisfy the nonlinear coupling condition. Furthermore, a result for instability is presented and the initial parameters inferred from the observational data are used. The results show that the nonlinear coupling (particle-wave interaction) can be a candidate for the generation of RX mode wave in equatorial plasmasphere. Besides, the results show that energetic particles that participate in particle - wave interaction have an energy range from 0.058 to 10.23keV. This range of particle energy particle is in agreement with the observation. | ||
| کلیدواژه‌ها | ||
| Particle energies؛ instability؛ Nonlinear wave-particle | ||
| عنوان مقاله [English] | ||
| A Study of Bit Condition for Generation Rx -Mode Waves: Interaction of Particles with Z/UH-Mode Waves | ||
| نویسندگان [English] | ||
| Mohammad Javad Kalaee | ||
| Assistant Professor, Department of Space Physics, Institute of Geophysics, University of Tehran, Iran | ||
| چکیده [English] | ||
| Interactions of charge particles with electromagnetic waves have important effects (linear and nonlinear) on the propagation of electromagnetic waves, and it can somewhat play a role in generation of the new mode waves. Besides, the particle energies can play an important role in causing instability in plasma. The values of parallel energy of the particles have been calculated so that they can satisfy the nonlinear coupling condition. Furthermore, a result for instability is presented and the initial parameters inferred from the observational data are used. The results show that the nonlinear coupling (particle-wave interaction) can be a candidate for the generation of RX mode wave in equatorial plasmasphere. Besides, the results show that energetic particles that participate in particle - wave interaction have an energy range from 0.058 to 10.23keV. This range of particle energy particle is in agreement with the observation. | ||
| کلیدواژه‌ها [English] | ||
| Particle energies, instability, Nonlinear wave-particle | ||
| مراجع | ||
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Freund, H. P., Wong, H. K., Wu, C. S. and Xu, M. J., 1983, An electron cyclotron maser instability for astrophysical plasmas, Physics of Fluids, 26, 2263-2270. Kalaee, M. J., Katoh, Y. and Ono, T., 2013, A simulation study of the plasma wave enhancements in the earth’s equatorial plasmasphere: Earth, Moon and Planets, 110, 131-141. Kalaee, M. J. and Katoh, Y., 2015, A simulation study of RX-mode waves generation in the equatorial plasmasphere: Iranian Journal of Geophysics, 1-10. Kurth, W. S., Frank, L. A., Ashour-Abdalla, Gurnett, M. D. A. and Burek, B. G., 1980, Observation of a free-energy source for intense electrostatic waves: Geophys. Res. Lett., 7, 293-296. Lee, L. C., Wu, C. S., Freud, H. P., Dillenburg, D. and Goedert, J., 1979, Excitation of high- frequency waves with mixed polarization by streaming energetic electrons: J. Plasma Phys., 22, 277-288. Li, W., Thorne, R. M., Bortnik, J., Nishimura, Y., Angelopoulos, V., Chen, L., McFadden, J. P. and Bonnell, J. W., 2010, Global distributions of super thermal electrons observed on the THEMIS and potential mechanisms for access into the plasmasphere: J. Geophys.Res.,115, 1-14. Nishimura, Y., Ono, T., Iizima, M., Shinbori, A. and Kumamoto, A., 2007, Generation mechanism of Z-mode waves in the equatorial plasmasphere, Earth planets space, 59, 1027-1034. Usui, H., Matsumoto, H., Gendrin, R. and Nishikawa, T., 2001, Computer experiments on a three-wave in association with microwave power transmission in space plasma, IEICE, transactions on communications, the special issue on innovation in antennas and propagation, E84-B, 2566-2573. Zhou, G. C., Li, Y., Cao, J. B. and Wang, X. Y., 1998, Particle Simulations for Electron Beam-Plasma Interactions, Chinese Physics Letters, 15(12), 895-897. | ||
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