Determination of the Quiet-Time Current Sheet Thickness Using Geotail CPI Data and Nonlinear Dynamics Modeling

Details Determination of the Quiet-Time Current Sheet Thickness Using Geotail CPI Data and Nonlinear Dynamics Modeling Determination of the Quiet-Time Current Sheet Thickness Using Geotail CPI Data and Nonlinear Dynamics Modeling

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agusmsm44a..02h&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SM44A-02

Physics

7807 Charged Particle Motion And Acceleration, 7839 Nonlinear Phenomena (4400, 6944), 2744 Magnetotail, 2764 Plasma Sheet

Scientific paper

In this paper we present a survey of the quiet (Kp ≤ 1+) current sheet thickness for XGSE between -20 RE and -80 RE as determined from an ion distribution function signature of nonlinear particle dynamics in current sheet-like magnetic fields. The signature manifests itself as a series of peaks in the ion distribution function whose separation depend on the fourth root of the energy and parameters that describe the current sheet structure. We have found clear evidence of the distribution function signature throughout the entire region of interest. Analysis of the data shows that the current sheet thickness is remarkably uniform in the region under study with an average thickness of 0.76± 0.56 RE. The current sheet thickness is also measured for our data set using a technique that employs moment data to infer the current sheet thickness. We find that for quiet times the two methods yield similar results. The results are also consistent with multi-point measurements of the quiet time current sheet thickness made using the Cluster satellites

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