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Title: Ion acceleration and coherent structures generated by lower hybrid shear-driven instabilities

Abstract

It is shown that if [kappa]=[omega][sub [ital S]]/[omega][sub LH][gt]1 ([omega][sub [ital S]] and [omega][sub LH] are the shear and lower hybrid frequencies), a sheared electron cross-field flow excites the electron-ion-hybrid mode, causing significant perpendicular ion acceleration. The electric potential develops coherent structures (vortexlike) longer than the electron Larmor radius, [rho][sub [ital e]]. For [kappa][lt]1, a smooth transition occurs where the wavelength becomes of the order of [rho][sub [ital e]], the lower hybid drift instability dominates, and the formation of vortexlike structures is no longer observed. The results are relevant to laboratory, laser-produced, and space plasmas.

Authors:
;  [1];  [2]
  1. Space Plasma Branch, Plasma Physics Division Naval Research Laboratory, Washington, D.C. 20375 (United States)
  2. Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742 (United States)
Publication Date:
OSTI Identifier:
6933342
Resource Type:
Journal Article
Journal Name:
Physical Review Letters; (United States)
Additional Journal Information:
Journal Volume: 69:24; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; PLASMA; DRIFT INSTABILITY; ACCELERATION; COULOMB FIELD; ELECTRIC POTENTIAL; IONS; LABORATORIES; LARMOR RADIUS; LASER-PRODUCED PLASMA; NONLINEAR PROBLEMS; PLASMA MICROINSTABILITIES; RESONANCE; SHEAR; SPACE; THEORETICAL DATA; VORTICES; CHARGED PARTICLES; DATA; ELECTRIC FIELDS; INFORMATION; INSTABILITY; NUMERICAL DATA; PLASMA INSTABILITY; 700340* - Plasma Waves, Oscillations, & Instabilities- (1992-)

Citation Formats

Romero, H, Ganguli, G, and Lee, Y C. Ion acceleration and coherent structures generated by lower hybrid shear-driven instabilities. United States: N. p., 1992. Web. doi:10.1103/PhysRevLett.69.3503.
Romero, H, Ganguli, G, & Lee, Y C. Ion acceleration and coherent structures generated by lower hybrid shear-driven instabilities. United States. https://doi.org/10.1103/PhysRevLett.69.3503
Romero, H, Ganguli, G, and Lee, Y C. Mon . "Ion acceleration and coherent structures generated by lower hybrid shear-driven instabilities". United States. https://doi.org/10.1103/PhysRevLett.69.3503.
@article{osti_6933342,
title = {Ion acceleration and coherent structures generated by lower hybrid shear-driven instabilities},
author = {Romero, H and Ganguli, G and Lee, Y C},
abstractNote = {It is shown that if [kappa]=[omega][sub [ital S]]/[omega][sub LH][gt]1 ([omega][sub [ital S]] and [omega][sub LH] are the shear and lower hybrid frequencies), a sheared electron cross-field flow excites the electron-ion-hybrid mode, causing significant perpendicular ion acceleration. The electric potential develops coherent structures (vortexlike) longer than the electron Larmor radius, [rho][sub [ital e]]. For [kappa][lt]1, a smooth transition occurs where the wavelength becomes of the order of [rho][sub [ital e]], the lower hybid drift instability dominates, and the formation of vortexlike structures is no longer observed. The results are relevant to laboratory, laser-produced, and space plasmas.},
doi = {10.1103/PhysRevLett.69.3503},
url = {https://www.osti.gov/biblio/6933342}, journal = {Physical Review Letters; (United States)},
issn = {0031-9007},
number = ,
volume = 69:24,
place = {United States},
year = {1992},
month = {12}
}