Nonperturbing plasma-focus measurements in the run-down phase

Journal Article · Sat Apr 01 04:00:00 EST 1989 · IEEE Trans. Plasma Sci.; (United States)

DOI:https://doi.org/10.1109/27.24641· OSTI ID:6090305

Tou, T Y; Lee, S; Kwek, K H

Simultaneous and nonperturbing measurements involve using a multislit streak camera, two high-voltage probes, and a Rogowski coil are carried out to enable an equivalent-circuit analysis to be made of a plasma-focus discharge in the run-down phase. A leak current is assumed to flow at the insulator. The calculations show that maximum constant values of diode voltage, V/sub rho/ approx. = 5.3 kV, and pinch current, I/sub rho/ approx. = 200 kA, are attained during the run-down phase; the product of these two parameters show an upper limit in the input power. From the multislit streak camera, a limiting run-down speed, upsilon/sub z/ approx. = 9.2 cm/..mu..s, for the plasma sheath is observed which suggests a constant rate of change of inductance. These observations indicate a steady-state operation of the plasma focus for this duration.

• Research Organization: Plasma Research Lab., Research School of Physical Sciences, Australian National Univ., Canberra (AU); Plasma Research Lab., Dept. of Physics, Univ. of Malaya, 59100 Kuala Lumpur (MY)
• OSTI ID: 6090305
• Journal Information: IEEE Trans. Plasma Sci.; (United States), Journal Name: IEEE Trans. Plasma Sci.; (United States) Vol. 17:2; ISSN ITPSB
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
CAMERAS
CURRENTS
ELECTRIC COILS
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
EQUIPMENT
LEAKAGE CURRENT
MEASURING INSTRUMENTS
PARAMETRIC ANALYSIS
PINCH DEVICES
PLASMA
PLASMA DIAGNOSTICS
PLASMA SHEATH
RADIATION DETECTORS
ROGOWSKI COIL
STEADY-STATE CONDITIONS
STREAK CAMERAS
THERMONUCLEAR DEVICES