Published December 1987 | Version v1
Journal article Metadata-only

Non ideal instabilities in field reversed O-pinches

Creators

  • 1. Universidade Federal Fluminense, Niteroi (Brazil). Inst. de Fisica

Description

Rotational instabilities and resistive tearing modes are the most striking modes observed in high temperature θ-pinches with zero orversed bias field. The configurations which have the effect of a rigid rotation of the plasma column are studied. Some recent experimental data indicate that an m=2 mode appears after the rotation reaches a critical value. It is shown that the growth rate of the m=2 mode may be greater than that of the m=1 resistive kink mode, depending on the experimental conditions. The result are applied to several experimental data in the literature. (author)

Abstract (Portuguese)

Modos resistivos de rompimento e instabilidades rotacionais sao os mais relevantes modos observados em θ-pinches de alta temperatura com ou sem campo reverso de polarizacao. Estudam-se estas configuracoes como efeito de uma rotacao rigida da coluna de plasma. Alguns dados experimentais mais recentes indicam que um modo m=2 aparece depois que a rotacao alcanca um valor critico. Mostra-se que a taxa de crescimento do modo m=2 pode ser maior que a do modo resistivo de dobra m=1 dependendo das condicoes experimentais. Aplicam-se os resultados a diversos dados experimentais encontrados na literatura. (autor)

Additional details

Publishing Information

Journal Title
Rev. Bras. Fis.
Journal Volume
17
Journal Issue
4
Series
Rev. Bras. Fis.
Journal Page Range
531-545
ISSN
0374-4922
CODEN
RBFSA

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
19074359
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
COMPARATIVE EVALUATIONS; EIGENVALUES; KINK INSTABILITY; MAGNETIC FIELDS; MAGNETOHYDRODYNAMICS; PLASMA; REVERSE-FIELD PINCH; ROTATION; TEARING INSTABILITY; THETA PINCH
Descriptors DEC
EVALUATION; FLUID MECHANICS; HYDRODYNAMICS; INSTABILITY; MECHANICS; PINCH EFFECT; PLASMA INSTABILITY; PLASMA MACROINSTABILITIES