Laboratory simulation of the magnetosphere, magnetotail reconnection and the study of field-aligned currents

Details Laboratory simulation of the magnetosphere, magnetotail reconnection and the study of field-aligned currents Laboratory simulation of the magnetosphere, magnetotail reconnection and the study of field-aligned currents

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990phdt.........5y&link_type=abstract

Ph.D. Thesis California Univ., Riverside.

Physics

Earth Magnetosphere, Field Aligned Currents, Geomagnetic Tail, Interplanetary Magnetic Fields, Magnetic Field Reconnection, Magnetohydrodynamics, Plasma Interactions, Plasmas (Physics), Simulation, Solar Wind, Electron Beams, Exposure, Particle Precipitation, Polarity, Position (Location)

Scientific paper

A laboratory simulation of the Earth's magnetosphere was performed. A wide plasma beam simulates the solar wind plasma. An externally applied magnetic field throughout the interaction chamber is varied between -300 and +300 G to simulate the interplanetary magnetic field (IMF). This magnetized plasma beam interacts with a spherical dipole magnetic field that simulates the planetary field to form a planetary type plasma sphere. Cusp structures and particle precipitations are studied with optical time exposure photographs of the simulated magnetosphere. The structure is strongly controlled by the polarity of the IMF. The global structure of the magnetosphere is measured in detail for different values of the IMF at various locations in the magnetosphere. Particularly, the magnetic field measurements in the tail reveal interesting reconnection processes. The main experimental parameters are selected in such a way that, at least, MHD scaling is satisfied.

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