Observation of the plasma boundary layer at lunar distances - Direct injection of plasma into the plasma sheet

Details Observation of the plasma boundary layer at lunar distances - Direct injection of plasma into the plasma sheet Observation of the plasma boundary layer at lunar distances - Direct injection of plasma into the plasma sheet

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.4607s&link_type=abstract

Journal of Geophysical Research, vol. 85, Sept. 1, 1980, p. 4607-4615.

Physics

1

Boundary Layer Plasmas, Lunar Orbits, Magnetopause, Plasma Layers, Plasma-Particle Interactions, Distribution Functions, Flow Velocity, Geomagnetism, Magnetosheath, Magnetospheric Ion Density, Plasma Density, Plasma Temperature

Scientific paper

The paper presents observational evidence from the Apollo suprathermal ion detector experiments that the injection of magnetosheath particles at the low-latitude magnetopause operates at lunar distances as well. An interface between the magnetosheath and the plasma sheet, termed the plasma sheet boundary layer (PSBL), is identified and believed to be the extension of the magnetospheric boundary layer (also called the plasma boundary layer) observed on the dayside. Using measurements of the PSBL's thickness, magnetic field, and plasma velocity the average electric potential drop across the PSBL is estimated at 4.2 kV and compared with the potential drop which is needed to insure that the magnetopause is an equipotential for a closed magnetosphere. It was concluded though that the magnetosphere is open since this drop is much larger than 4.2 kV.

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