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Detailed Reference Information |
Gary, S.P. and Nishimura, K. (2004). Kinetic Alfvén waves: Linear theory and a particle-in-cell simulation. Journal of Geophysical Research 109: doi: 10.1029/2003JA010239. issn: 0148-0227. |
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An Alfv¿n-cyclotron fluctuation of sufficiently short wavelength has a strong proton cyclotron resonance at propagation parallel to the background magnetic field Bo in a homogeneous, collisionless electron-proton plasma. As k∥, the wavevector component parallel to Bo, decreases, the proton cyclotron wave-particle interaction becomes nonresonant, and the electron Landau resonance becomes effective at propagation oblique to Bo. Here linear Vlasov theory is used to determine the dispersion and damping properties of Alfv¿n-cyclotron fluctuations associated with the transition from the proton cyclotron resonance regime to the electron Landau resonance regime. Also, a particle-in-cell plasma simulation is used to examine the electron response to the initial imposition of an Alfv¿n-cyclotron wave in the electron Landau resonance regime. The computation shows heating of the electrons in the direction parallel to Bo and the formation of a beam in the direction of the parallel component of k. |
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BACKGROUND DATA FILES |
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Abstract |
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Keywords
Interplanetary Physics, Plasma waves and turbulence, Solar Physics, Astrophysics, and Astronomy, Corona, Space Plasma Physics, Kinetic and MHD theory, Space Plasma Physics, Numerical simulation studies, Alfvén waves, computer simulation, proton cyclotron damping, electron Landau damping |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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