Anomalous transport properties associated with the lower-hybrid-drift instability

Journal Article · Wed Oct 01 04:00:00 EDT 1975 · Phys. Fluids, v. 18, no. 10, pp. 1327-1335

DOI:https://doi.org/10.1063/1.861021· OSTI ID:4145811

Davidson, R C; Gladd, N T

The linear stability behavior and anomalous transport properties associated with the lower-hybrid-drift instability are studied assuming flute- like perturbations with kcenter-dotB$sub 0$=0. Primary emphasis is placed on the low-drift-velocity regime with V/subE/approximately-less-thanv/subi/ (here, V/ subE/ is the cross-field electron EtimesB drift velocity), which pertains to the late stages of implosion and the post-implosion phase of high-density pinch experiments. Nonlinear estimates of the instantaneous heating rates and rate of momentum transfer are made, and the results are studied numerically to determine the parametric dependence on V/subE//v/subi/ and the level of turbulent field fluctuation energy E/subF/. It is shown that the lower-hybrid-drift instability can result in substantial resistivity and plasma heating for V/subE/approximately- less-thanv/subi/, as well as for the large-drift-velocity regime (V/subE/>v/subi/ ). For example, when T/subi//T/sube/very-much-greater-than1 and $omega$$sup 2$/ subp//sube//$omega$$sup 2$/subc//sube/very-much-greater-than1, the bound on anomalous resistivity for V/subE/approximately-less-thanv/subi/ is n/suba//subn/ )approx. =4$pi$root$pi$/2(V/subE//v/subi/)$sup 2$ $omega$/subL//subH// $omega$$sup 2$/subc//sube/, where $omega$/subL//subH/ = ($omega$/subc//subi/ $omega$/subc//sube/)$sup 1$$/$$sup 2$ is the lower-hybrid frequency. This large value of resistivity is consistent with observations made during the post- implosion phase of the ZT-1 experiment.

• Research Organization: Los Alamos Scientific Laboratory, University of California, Los Alamos, New Mexico 87544
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-000305
• OSTI ID: 4145811
• Journal Information: Phys. Fluids, v. 18, no. 10, pp. 1327-1335, Journal Name: Phys. Fluids, v. 18, no. 10, pp. 1327-1335; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

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HYBRID RESONANCE
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PLASMA HEATING
TRANSPORT THEORY
VELOCITY