Universal diagram for regimes of Z -pinch stability

Journal Article · Mon Mar 18 04:00:00 EST 1991 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.66.1462· OSTI ID:5750329

Haines, M G; Coppins, M ^[1]

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1. Blackett Laboratory, Imperial College, London SW7 2BZ, United Kingdom (GB)

The regimes for the applicability of various theoretical models for the stability of a {ital Z} pinch under pressure balance are shown to be clearly delineated in a diagram of ln({ital I}{sup 4}{ital a}) vs ln{ital N}, where {ital I}, {ital a}, and {ital N} are the current, pinch radius, and line density, respectively. In particular, the most unstable regime where ideal magnetohydrodynamics applies is shown to be restricted to a small-wedge-shaped region bounded by resistive, viscous, anisotropic, and finite Larmor radius effects. Recent experimental results of anomalous stability can be interpreted in terms of resistive or large-ion Larmor-radius effects.

• OSTI ID: 5750329
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 66:11; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
CHARGED PARTICLES
DATA
DIAGRAMS
FLUID MECHANICS
HYDRODYNAMICS
INFORMATION
IONS
LARMOR RADIUS
LINEAR PINCH DEVICES
LINEAR Z PINCH DEVICES
MAGNETOHYDRODYNAMICS
MECHANICS
NUMERICAL DATA
OPEN PLASMA DEVICES
PINCH DEVICES
PLASMA PRESSURE
PLASMA SIMULATION
SIMULATION
STABILITY
THEORETICAL DATA
THERMONUCLEAR DEVICES