Final Technical Report ''Double discontinuities in space plasma''
This research used high-resolution magnetic field data to examine the interior structures of MHD shocks in interplanetary space and in the magnetotail; we discovered that a slow-mode shock is often followed by an adjoining rotational discontinuity layer on the postshock side. The thickness of each layer is of the order of a few ion inertial lengths. Such a compound structure is known as a double discontinuity. When the magnetic field rotates by several degrees per ion inertial length inside a thin layer, the Hall current term becomes important in the generalized Ohm's law. Steady state solutions based on the Hall-MHD theory have been obtained to show the merging of a rotational layer and a slow shock layer to form a compound structure like the observed double discontinuities.
- Publication Date:
- OSTI Identifier:
- Report Number(s):
- DOE Contract Number:
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: PBD: 13 May 2004
- Research Org:
- Catholic University of America (US)
- Sponsoring Org:
- USDOE Office of Science (SC) (US)
- Country of Publication:
- United States
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; INTERPLANETARY SPACE; MAGNETIC FIELDS; MAGNETOTAIL; PLASMA; THICKNESS HIGH-RESOLUTION MAGNETIC FIELD DATA; MHD SHOCKS; DOUBLE DISCONTINUITY; HALL-MHD THEORY
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