论文信息 - Electron kinetic effects in switch‐off slow shocks

Electron kinetic effects in switch‐off slow shocks

Numerical simulations of the slow-mode switch-off shock with kinetic electrons give significantly different results from hybrid simulations with fluid electrons. With appropriate downstream boundary conditions there results a more coherent and more strongly damped trailing magnetic wave with fewer back-streaming ions than with the hybrid model under the same conditions. Evidently, kinetic effects cause a more equal sharing of shock-induced entropy increases between ions and electrons, which results in lower ion temperatures downstream and greater electron energy transport from downstream to upstream. 13 refs., 3 figs., 1 tab.

J. U. Brackbill | H. X. Vu

[1] John M. Dawson,et al. Thermal Relaxation in a One‐Species, One‐Dimensional Plasma , 1964 .

[2] J. Slavin,et al. Slow mode shocks in the Earth' magnetotail: ISEE-3 , 1984 .

[3] D. Winske,et al. Electromagnetic ion/ion cyclotron instability at slow shocks , 1990 .

[4] P. C. Gray,et al. Heat flow between species in one-dimensional particle plasma simulations , 1991 .

[5] F. Coroniti,et al. Laminar wave-train structure of collisionless magnetic slow shocks , 1971 .

[6] D. Winske,et al. Kinetic structure of slow shocks: Effects of the electromagnetic ion/ion cyclotron instability , 1992 .

[7] D. Swift. On the structure of the magnetic slow switch‐off shock , 1983 .

[8] J. U. Brackbill,et al. CELEST1D: an implicit, fully kinetic model for low-frequency, electromagnetic plasma simulation , 1992 .

[9] E. W. Hones,et al. Evidence for slow-mode shocks in the deep geomagnetic tail , 1984 .

[10] Dan Winske,et al. The structure and evolution of slow mode shocks , 1985 .

[11] E. W. Hones,et al. Structure of a slow mode shock observed in the plasma sheet boundary layer , 1987 .

[12] M. Feix,et al. Numerical Experiments with a Plasma Model , 1963 .