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Title: 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

Abstract

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 magneticmore » field diffusion has been developed. Predicted plasma behavior is in good agreement with experimental data.« less

Authors:
;
Publication Date:
Research Org.:
Pennsylvania State Univ., University Park (USA)
OSTI Identifier:
7291411
Report Number(s):
COO-4020-3
TRN: 77-011135
DOE Contract Number:  
EY-76-S-02-4020
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; LINEAR THETA PINCH DEVICES; PLASMA CONFINEMENT; PLASMA DIAGNOSTICS; INTERFEROMETRY; ENERGY LOSSES; ENERGY STORAGE; LASER RADIATION; MAGNETIC FIELD CONFIGURATIONS; PLASMA DRIFT; PLASMA SHEATH; RESEARCH PROGRAMS; SCALING LAWS; THOMSON SCATTERING; CONFINEMENT; ELECTROMAGNETIC RADIATION; INELASTIC SCATTERING; LINEAR PINCH DEVICES; OPEN PLASMA DEVICES; PINCH DEVICES; RADIATIONS; SCATTERING; STORAGE; THERMONUCLEAR DEVICES; 700101* - Fusion Energy- Plasma Research- Confinement, Heating, & Production; 700102 - Fusion Energy- Plasma Research- Diagnostics

Citation Formats

York, T M, and Klevans, E H. 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. United States: N. p., 1977. Web. doi:10.2172/7291411.
York, T M, & Klevans, E H. 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. United States. https://doi.org/10.2172/7291411
York, T M, and Klevans, E H. 1977. "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". United States. https://doi.org/10.2172/7291411. https://www.osti.gov/servlets/purl/7291411.
@article{osti_7291411,
title = {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},
author = {York, T M and Klevans, E H},
abstractNote = {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.},
doi = {10.2172/7291411},
url = {https://www.osti.gov/biblio/7291411}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {2}
}