NDLI: Magnetotail structures in a simulated earth's magnetosphere

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Magnetotail structures in a simulated earth's magnetosphere

Content Provider	NASA Technical Reports Server (NTRS)
Author	Rahman, H. U. Wessel, F. J. Minami, S. Yur, G. Birn, J.
Copyright Year	1993
Description	The structure of the magnetotail is investigated in a laboratory simulated magnetosphere. Particular emphasis is placed on the region of distant magnetotail where the closed field line region of the plasma sheet terminates and the process of reconnection takes place. Our study builds upon the previous investigation of the magnetotail where the main results were based on the magnetic field measurements in the tail region of the simulated magnetosphere. In this paper, more elaborate measurements of plasma flow and electric field are presented. Besides these measurements, this region of distant magnetotail is also explored by high resolution imaging with a gated optical imager (GOI) and by digital image analysis. These images clearly reveal a Y-type magnetic neutral line for the northward 'interplanetary' field (IMF) and a usual X-type for the southward IMF that confirms our previous results deduced from the magnetic field measurements. In the neighborhood of these neutral points a strong component of dawn to dusk electric field (E(sub y)) and a counterstreaming plasma flow is also observed. Plasma flow is measured by using a double sided Faraday cup which is also used to measure the y-component of tail current (J(sub y)) at different locations. These measurements reveal that the tail current is not carried by ions as previously thought, rather it is carried by electrons alone.
File Size	541657
Page Count	18
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19930017955
Archival Resource Key	ark:/13960/t88h3j91x
Language	English
Publisher Date	1993-01-01
Access Restriction	Open
Subject Keyword	Geophysics Plasma Layers Geomagnetic Tail High Resolution Imaging Techniques Ions Twilight Glow Interplanetary Magnetic Fields Earth Magnetosphere Image Analysis Magnetohydrodynamic Flow Magnetic Fields Electric Fields Electrons Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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