TY - JOUR
T1 - Comparison of Quasi-Linear Predictions With A Computer Simulation of Whistler Waves In Unstable Plasmas
AU - Cuperman, S.
AU - Lyons, L. R.
PY - 1974/6
Y1 - 1974/6
N2 - The quasi-linear concept of plateau formation along resonant diffusion surfaces is compared with the time evolution of the electron distribution function during a computer simulation experiment of whistler-mode waves in unstable plasmas. It is found that, as the wave intensities grow, plateau formation does indeed occur, with the distribution function becoming constant along diffusion surfaces at the time when wave intensities maximize. Following the formation of the plateaus, both the wave intensities and the slope of the distribution function along diffusion surfaces oscillate in a manner suggesting mode-mode coupling. The slope of the distribution function along diffusion surfaces, which controls the linear wave growth rate, also gives good predictions of the sign of the actual wave growth rate during the experiment.
AB - The quasi-linear concept of plateau formation along resonant diffusion surfaces is compared with the time evolution of the electron distribution function during a computer simulation experiment of whistler-mode waves in unstable plasmas. It is found that, as the wave intensities grow, plateau formation does indeed occur, with the distribution function becoming constant along diffusion surfaces at the time when wave intensities maximize. Following the formation of the plateaus, both the wave intensities and the slope of the distribution function along diffusion surfaces oscillate in a manner suggesting mode-mode coupling. The slope of the distribution function along diffusion surfaces, which controls the linear wave growth rate, also gives good predictions of the sign of the actual wave growth rate during the experiment.
UR - http://www.scopus.com/inward/record.url?scp=0016071101&partnerID=8YFLogxK
U2 - 10.1017/S0022377800024752
DO - 10.1017/S0022377800024752
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AN - SCOPUS:0016071101
SN - 0022-3778
VL - 11
SP - 397
EP - 401
JO - Journal of Plasma Physics
JF - Journal of Plasma Physics
IS - 3
ER -