Evidence for a pressure-driven instability in the CTX spheromak

Recent improvements in the operation of the CTX spheromak device have produced discharges containing evidence for a pressure-driven instability. The instability leads to a distinct event in the discharge, which can be studied in detail. Data are presented which reasonably discount Taylor relaxation...

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Veröffentlicht in:	Phys. Rev. Lett.; (United States) 1988-11, Vol.61 (21), p.2457-2460
Hauptverfasser:	WYSOCKI, F. J, FERNANDEZ, J. C, HENINS, I, JARBOE, T. R, MARKLIN, G. J
Format:	Artikel
Sprache:	eng
Schlagworte:	70 PLASMA PHYSICS AND FUSION TECHNOLOGY CLOSED PLASMA DEVICES CTX SPHEROMAK Exact sciences and technology FLUCTUATIONS INSTABILITY Magnetic confinement and equilibrium OPERATION Physics Physics of gases, plasmas and electric discharges Physics of plasmas and electric discharges PLASMA PLASMA INSTABILITY PRESSURE GRADIENTS RAYLEIGH-TAYLOR INSTABILITY RELAXATION SPHEROMAK DEVICES THERMONUCLEAR DEVICES TOKAMAK DEVICES VARIATIONS 700107 > Fusion Energy-- Plasma Research-- Instabilities
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Beschreibung
Zusammenfassung:	Recent improvements in the operation of the CTX spheromak device have produced discharges containing evidence for a pressure-driven instability. The instability leads to a distinct event in the discharge, which can be studied in detail. Data are presented which reasonably discount Taylor relaxation of the current profile as the cause of the event. The critical value of the normalized pressure gradient has been measured and is compared to the Mercier limit.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.61.2457