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Second-Order Resonant Interaction of Ring Current Protons with Whistler-Mode Waves |
| XIAO Fu-Liang1,2;CHEN Liang-Xu1;HE Hui-Yong1;ZHOU Qing-Hua1 |
| 1School of Physics and Electronic Sciences, Changsha University of Science and Technology, Changsha 4100762State Key Laboratory of Space Weather, PO Box 8701, Beijing 100080 |
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| Cite this article: |
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XIAO Fu-Liang, CHEN Liang-Xu, HE Hui-Yong et al 2008 Chin. Phys. Lett. 25 336-339 |
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Abstract We present a study on the second-order resonant interaction between the ring current protons with Whistler-mode waves propagating near the quasi electrostatic limit following the previous second-order resonant theory. The
diffusion coefficients are proportional to the electric field amplitude E, much greater than those for the regular first-order resonance, which are proportional to the electric field amplitudes square E2. Numerical calculations for the pitch angle scattering are performed for typical energies of protons
Ek=50keV and 100keV at locations L=2 and L=3.5. The timescale for the loss process of protons by the Whistler waves is found to approach one hour, comparable to that by the EMIC waves, suggesting that Whistler waves may also contribute significantly to the ring current decay under appropriate
conditions.
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| Keywords:
94.20.Rr
52.35.Hr
94.30.Jp
94.20.Qq
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Received: 30 May 2007
Published: 27 December 2007
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| PACS: |
94.20.Rr
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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.Jp
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94.20.Qq
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(Particle precipitation)
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[1] Lu Q M, Wang L Q, Zhou Y and Wang S 2004 Chin. Phys.Lett. 21 129
[2] Wang D Y 2003 Chin. Phys. Lett. 20 533
[3] Wang D Y, Huang G L and Lu Q M 2004 Chin. Phys.Lett. 21 1997
[4]Guo J, Lu Q M, Wang S, Wang Y M and Dou X K 2004 Chin. Phys. Lett. 21 1306
[5] Xiao F L, Zheng H N and Wang S 2005 Chin. Phys.Lett. 22 1552
[6] Xiao F L, Zheng H N and Wang S 2005 Chin. Phys.Lett. 22 517
[7] Xiao F L, Zhao H and He H Y 2005 Chin. Phys. Lett. 22 2451
[8] Xiao F L and He H Y 2006 Chin. Phys. Lett. 23267
[9] Xiao F L, Zhou Q H, Zheng H N and Wang S 2006 J.Geophys. Res. 111 A08208
[10]Xiao F L, He H Y, Zhou Q H, Zheng H N and Wang S 2006 J. Geophys. Res. 111 A11201
[11] Daglis I A, Thorne R M, Baumjohann W and Orsini S 1999 Rev. Geophys. 37 407
[12]Jordanova V K, Farrugia C J, Thorne R M, Khazanov G V,Reeves G D and Thomsen M F 2001 J. Geophys. Res 106 7
[13] Lyons L R and Thorne R M 1972 J. Geophys. Res 77 5608
[14] Gonzalez E, Smith J, Tang F and Akasofu S I 1989 J. Geophys. Res 94 8835
[15] Prigancova A and Feldstein Y I 1992 Planet.Space Sci. 40 581
[16] Xiao F L, Zhou Q H, He H Y, Zheng H N and Wang S 2007 J. Geophys. Res. 112 A07219
[17]Kozyra J U, Rasmussen C E and Miller R H 1994 J.Geophys. Res. 99 4069
[18] Kozyra J U, Rasmussen C E and Miller R H 1995 J.Geophys. Res. 100 21911
[19] Villalon E and Burke W J 1993 J. Geophys. Res. 98 13509
[20] Villalon E and Burke W J 1994 J. Geophys. Res. 99 21329
[21] Roberts C S 1969 Rev. Geophys. Space Phys. 7305
[22] Albert J M 1994 J. Geophys. Res. 99 23741
[23] Xie L, Pu Z Y, Zhou X Z, Fu S Y and Zong Q G 2004 Chin. Sci. Bulletin 49 603 (in chinese)
[24] Gallagher D L, Craven P D and Comfort R H 2000 J.Geophys. Res. 105 18819 |
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