Space and Time Resolved Measurements of Current and Electron Density Profiles Around High Current Z-Pinches

Award Information
Agency: Department of Defense
Branch: Defense Threat Reduction Agency
Contract: N/A
Agency Tracking Number: 19766
Amount: $74,986.00
Phase: Phase I
Program: SBIR
Awards Year: 1993
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Science Research Laboratory
15 Ward Street, Somerville, MA, 02143
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr. Niansheng Qi
 (510) 521-8087
Business Contact
Phone: () -
Research Institution
N/A
Abstract
IT IS PROPOSED TO USE A SENSITIVE LASER PROBE BEAM TO MEASURE, VIA BEAM REFRACTION AND FARADAY ROTATION, THE PLASMA DENSITIES AND MAGNETIC FIELDS (HENCE CURRENT PROFILES) AROUND HIGH CURRENT Z-PINCHES. DURING PHASE I, A SIMPLE VERSION OF THE PROPOSED LASER METROLOGY TOOL, USING MANY COMPONENTS ALREADY AVAILABLE AT SRL, WILL BE VALIDATED BY MEASURING THE -0.5 MA CURRENTS (100-300 T MAGNETIC FIELDS) AND 1020 CM-3 ELECTRON DENSITIES AROUND A DENSE PLASMA FOCUS (DPF) Z-PINCH, WHICH IS ALSO ALREADY AVAILABLE AT SRL. ALTHOUGH THIS DPF PINCH OPERATES AT RELATIVELY LOW CURRENT, THE MAGNETIC FIELDS AND ELECTRON DENSITIES ARE WITHIN A FACTOR OF 2-3 OF THOSE EXPECTED IN HIGHER CURRENT SLMULATORS SUCH AS PHOENIX OR DECADE. THE PHASE I VALIDATION TESTS WILL THEREFORE PROVIDE RELIABLE DESIGN CRITERIA FOR A HIGHER POWERED VERSION OF THE LASER METROLOGY TOOL FOR PHASE II. DURING PHASE II, SUCH AN UPGRADED VERSION OF THE LASER TOOL WILL BE BUILT AND TESTED ON HIGH CURRENT Z-PINCH SOURCES SUCH AS PHOENIX OR DECADE.

* information listed above is at the time of submission.

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