Physics
Scientific paper
Jul 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20.1331m&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 20, no. 13, p. 1331-1334.
Physics
10
Earth Magnetosphere, Electrostatic Waves, Magnetically Trapped Particles, Plasma Dynamics, Plasma Potentials, Self Consistent Fields, Distribution Functions, Magnetic Flux, Magnetohydrodynamic Waves
Scientific paper
A steady state solution for the self-consistent electrostatic potential due to a plasma confined in a magnetic flux tube is considered. A steady state distribution function is constructed for the trapped particles from the constants of the motion, in the absence of waves and collisions. Using Liouville's theorem, the particle density along the geomagnetic field is determined and found to depend on the local magnetic field, self-consistent electric potential, and the equatorial plasma distribution function. A hot anisotropic magnetospheric plasma in steady state is modeled by a bi-Maxwellian at the equator. The self-consistent electric potential along the magnetic field is calculated assuming quasineutrality, and the potential drop is found to be approximately equal to the average kinetic energy of the equatorially trapped plasma. The potential is compared with that obtained by Alfven and Faelthammar (1963).
Khazanov George V.
Miller Ronald H.
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