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Study of flow and loss processes at the ends of a linear theta pinch. Progress report for the period June 1, 1976--May 31, 1977

Technical Report ·
DOI:https://doi.org/10.2172/7291411· OSTI ID:7291411
;
Experimental and analytical studies initiating and supporting research on flow and energy losses at the ends of a linear theta pinch have been carried out. A 25 cm linear pinch coil has been driven by a 515,000 A discharge with 10 ..mu..sec half-cycle time supplied by a 100 ..mu..F, 18 kV energy storage system. With reliable preionization generated up to 400 mT He, current sheath behavior has been identified with magnetic loop probes and double loop probes. Spectroscopic determination of preionization has been made. A ruby laser Thomson scattering diagnostic has been designed and is being procured. A study of transient plasma behavior in a 10 cm theta pinch has been carried out with a Twyman-Green interferometer using a 7 mW He--Ne CW laser. Pressure, electric field, and velocity probe diagnostics have received preliminary testing. Design work has been completed for the doubling of pinch length and energy storage system. Studies of particle loss scaling and reactor scaling of linear theta pinch devices have been reported. Detailed calculations of plasma properties at the end of the pinch coil following expansion from the central coil have been carried out. A O--D, time dependent computer code that includes conduction, convection, and magnetic field diffusion has been developed. Predicted plasma behavior is in good agreement with experimental data.
Research Organization:
Pennsylvania State Univ., University Park (USA)
DOE Contract Number:
EY-76-S-02-4020
OSTI ID:
7291411
Report Number(s):
COO-4020-3
Country of Publication:
United States
Language:
English

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Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101* -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700102 -- Fusion Energy-- Plasma Research-- Diagnostics
CONFINEMENT
ELECTROMAGNETIC RADIATION
ENERGY LOSSES
ENERGY STORAGE
INELASTIC SCATTERING
INTERFEROMETRY
LASER RADIATION
LINEAR PINCH DEVICES
LINEAR THETA PINCH DEVICES
MAGNETIC FIELD CONFIGURATIONS
OPEN PLASMA DEVICES
PINCH DEVICES
PLASMA CONFINEMENT
PLASMA DIAGNOSTICS
PLASMA DRIFT
PLASMA SHEATH
RADIATIONS
RESEARCH PROGRAMS
SCALING LAWS
SCATTERING
STORAGE
THERMONUCLEAR DEVICES
THOMSON SCATTERING