Second-Order Resonant Interaction of Ring Current Protons with Whistler-Mode Waves

XIAO Fu-Liang; CHEN Liang-Xu; HE Hui-Yong; ZHOU Qing-Hua

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Second-Order Resonant Interaction of Ring Current Protons with Whistler-Mode Waves

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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=50ke V and 100ke V 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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《中国物理快报：英文版》 |2008年第1期|336-339|共4页
作者
XIAO Fu-Liang; CHEN Liang-Xu; HE Hui-Yong; ZHOU Qing-Hua;
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作者单位

School of Physics and Electronic Sciences,Changsha University of Science and Technology,Changsha 410076;

State Key Laboratory of Space Weather,PO Box 8701,Beijing 100080;

School of Physics and Electronic Sciences,Changsha University of Science and Technology,Changsha 410076;

School of Physics and Electronic Sciences,Changsha University of Science and Technology,Changsha 410076;

School of Physics and Electronic Sciences,Changsha University of Science and Technology,Changsha 410076;

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中图分类物理学;
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Second-Order Resonant Interaction of Ring Current Protons with Whistler-Mode Waves

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