The adiabatic energy change of plasma electrons and the frame dependence of the cross-shock potential at collisionless magnetosonic shock waves

Details The adiabatic energy change of plasma electrons and the frame dependence of the cross-shock potential at collisionless magnetosonic shock waves The adiabatic energy change of plasma electrons and the frame dependence of the cross-shock potential at collisionless magnetosonic shock waves

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.6654g&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Aug. 1, 1984, p. 6654-6662.

Physics

126

Adiabatic Conditions, Bow Waves, Collisionless Plasmas, Electron Plasma, Magnetoacoustic Waves, Shock Waves, Adiabatic Equations, Electric Fields, Electron Energy

Scientific paper

The adiabatic energy gain of electrons in the stationary electric and magnetic field structure of collisionless shock waves was examined analytically in reference to conditions of the earth's bow shock. The study was performed to characterize the behavior of electrons interacting with the cross-shock potential. A normal incidence frame (NIF) was adopted in order to calculate the reversible energy change across a time stationary shock, and comparisons were made with predictions made by the de Hoffman-Teller (HT) model (1950). The electron energy gain, about 20-50 eV, is demonstrated to be consistent with a 200-500 eV potential jump in the bow shock quasi-perpendicular geometry. The electrons lose energy working against the solar wind motional electric field. The reversible energy process is close to that modeled by HT, which predicts that the motional electric field vanishes and the electron energy gain from the electric potential is equated to the ion energy loss to the potential.

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