Pressure, volume, density relationships in the plasma sheet

The entropy parameter Pn � 5/3 was found to be relatively uniform throughout the region studied. The energy parameter TV 2/3 decreased by 40% for ions and 10% for electrons near midnight between � 29.5 and � 11.5 RE. These energy parameter changes suggest that the most energetic ions and electrons are either being deenergized or preferentially lost, processes that may be associated with gradient and curvature drifts through the sides of the convecting flux tubes or by wave instabilities and a parallel heat flux. INDEX TERMS: 2764 Magnetospheric Physics: Plasma sheet; 2744 Magnetospheric Physics: Magnetotail; 2760 Magnetospheric Physics: Plasma convection; 2740 Magnetospheric Physics: Magnetospheric configuration and dynamics; KEYWORDS: plasma sheet, magnetotail, pressure balance inconsistency, 3-D models

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