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A Three-Dimensional Ray-Tracing Study of R-X Mode Waves during High Geomagnetic Activity |
XIAO Fu-Liang1; CHEN Lun-Jin2;ZHENG Hui-Nan2;WANG Shui2;GUO Jun3 |
| 1School of Physics and Electronic Sciences, Changsha University of Science and Technology, Changsha 4100762Key Laboratory for Basic Plasma Physics of Chinese Academy of Sciences, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 2300263School of Mathematics and Physics, Qingdao University of Science and Technology, Qingdao 266061 |
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XIAO Fu-Liang, CHEN Lun-Jin, ZHENG Hui-Nan et al 2008 Chin. Phys. Lett. 25 340-343 |
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Abstract We further present a three-dimensional (3D) ray-tracing study on the propagation characteristic of the superluminous R-X mode waves during high geomagnetic activity following our recent two-dimensional results [J. Geophys. Res. 112(2007)A10214]. We perform numerical calculations for this mode which originates at specific altitude r=2.0RE in the source cavity along a 70° night geomagnetic field line. We demonstrate that the ray path of the R-X mode is essentially governed by the azimuthal angle of the wave vector k. Ray paths starting with azimuthal angle 180° (or in the meridian plane) can reach the lowest latitude, but stay at relatively higher latitudes with the azimuthal angles other than 180° (or off the meridian plane). The results further supports the previous finding that the R-X mode may be physically
present in the radiation belts under appropriate conditions.
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| Keywords:
94.30.Tz
52.35.Hr
94.30.Lr
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Received: 08 July 2007
Published: 27 December 2007
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| PACS: |
94.30.Tz
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(Electromagnetic wave propagation)
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52.35.Hr
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(Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid))
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94.30.Lr
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(Magnetic storms, substorms)
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