The effect of axial temperature profile on the thermal instability in high current-carrying plasmas

Spencer Kuo, S. C. Kuo, E. Levi, E. E. Kunhardt

Research output: Contribution to journalArticle

Abstract

Current-carrying plasmas exhibit strong temperature gradients in the proximity of bounding electrodes. A modal analysis of the thermal instability shows that a constriction always starts near the electrodes. It is localized there, where the temperature dependence of the thermal and electrical conductivities are assigned parameter values that are characteristic of plasmas in magnetohydrodynamic channels. In the case of practically full ionization and very large pressures, that prevail in arc-driven railguns, the constriction expands axially over the entire length of the discharge.

Original languageEnglish (US)
Pages (from-to)1889-1893
Number of pages5
JournalJournal of Applied Physics
Volume63
Issue number6
DOIs
StatePublished - 1988

Fingerprint

thermal instability
temperature profiles
high current
constrictions
electrodes
magnetohydrodynamics
proximity
temperature gradients
thermal conductivity
arcs
ionization
temperature dependence
electrical resistivity

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

The effect of axial temperature profile on the thermal instability in high current-carrying plasmas. / Kuo, Spencer; Kuo, S. C.; Levi, E.; Kunhardt, E. E.

In: Journal of Applied Physics, Vol. 63, No. 6, 1988, p. 1889-1893.

Research output: Contribution to journalArticle

@article{ffcbbd00c4764ab08a03bde3b8cf0d90,
title = "The effect of axial temperature profile on the thermal instability in high current-carrying plasmas",
abstract = "Current-carrying plasmas exhibit strong temperature gradients in the proximity of bounding electrodes. A modal analysis of the thermal instability shows that a constriction always starts near the electrodes. It is localized there, where the temperature dependence of the thermal and electrical conductivities are assigned parameter values that are characteristic of plasmas in magnetohydrodynamic channels. In the case of practically full ionization and very large pressures, that prevail in arc-driven railguns, the constriction expands axially over the entire length of the discharge.",
author = "Spencer Kuo and Kuo, {S. C.} and E. Levi and Kunhardt, {E. E.}",
year = "1988",
doi = "10.1063/1.339887",
language = "English (US)",
volume = "63",
pages = "1889--1893",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "6",

}

TY - JOUR

T1 - The effect of axial temperature profile on the thermal instability in high current-carrying plasmas

AU - Kuo, Spencer

AU - Kuo, S. C.

AU - Levi, E.

AU - Kunhardt, E. E.

PY - 1988

Y1 - 1988

N2 - Current-carrying plasmas exhibit strong temperature gradients in the proximity of bounding electrodes. A modal analysis of the thermal instability shows that a constriction always starts near the electrodes. It is localized there, where the temperature dependence of the thermal and electrical conductivities are assigned parameter values that are characteristic of plasmas in magnetohydrodynamic channels. In the case of practically full ionization and very large pressures, that prevail in arc-driven railguns, the constriction expands axially over the entire length of the discharge.

AB - Current-carrying plasmas exhibit strong temperature gradients in the proximity of bounding electrodes. A modal analysis of the thermal instability shows that a constriction always starts near the electrodes. It is localized there, where the temperature dependence of the thermal and electrical conductivities are assigned parameter values that are characteristic of plasmas in magnetohydrodynamic channels. In the case of practically full ionization and very large pressures, that prevail in arc-driven railguns, the constriction expands axially over the entire length of the discharge.

UR - http://www.scopus.com/inward/record.url?scp=36549104043&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36549104043&partnerID=8YFLogxK

U2 - 10.1063/1.339887

DO - 10.1063/1.339887

M3 - Article

VL - 63

SP - 1889

EP - 1893

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 6

ER -