MESUREMENT OF MACROSCOPIC ELECTRIC FIELDS IN SOLAR PLASMA STRUCTURES

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 5614
Amount: $50,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1987
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Cambridge Research & Instrumen
21 Erie St, Cambridge, MA, 02139
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 PETER V FOUKAL
 (617) 491-2627
Business Contact
Phone: () -
Research Institution
N/A
Abstract
MACROSCOPIC ELECTRIC FIELDS PLAY A CENTRAL ROLE IN THE PROCESSES OF RECONNECTION AND PARTICLE ACCELERATION THAT FIGURE PROMINENTLY IN SOLAR-TERRESTRIAL PHYSICS STUDIES OF FLARES AND FILAMENT ERUPTIONS. DETECTION OF THESE FIELDS AND MEASURMENT OF THEIR MAGNITUDE, ORIENTATION, SPATIAL DISTRIBUTION, AND TIME DEPENDENCE WOULD OPEN A NEW AREA OF INVESTIGATION IN SOLAR PLASMA DIAGNOSTIC TECHNIQUES. WE HAVE DEVELOPED A NEW TECHNIQUE FOR REMOTE SENSING THE MAGNITUDE AND ORIENTATION OF MACROSCOPIC ELECTRIC FIELDS HAVING A SUBSTANTIAL COMPONENT IN THE SKY PLANE, USING THE POLARIZATION-DEPENDENCE OF BALMER LINE STARK BROADENING. RESULTS SO FAR SUGGEST A DETECTABLE FIELD POSSIBLY ASSOCIATED WITH RECONNECTION IN AN EXCELLENT SET OF OBSERVATIONS OF A POST-FLARE LOOP. THE PHASE I WORK WE PROPOSE HERE WOULD EXTEND THESE SOLAR OBSERVATIONS TO A LARGER SAMPLE OF SOLAR STRUCTURES, AND TO THE PASCHEN LINES IN THE NEAR IR WHERE THE TECHNIQUE SHOULD BE MORE SENSITIVE. WE ALSO INTEND TO CARRY OUT LABORATORY MEASUREMENTS AT THE MIT TARA MIRROR MACHINE TO FURTHER REFINE AND CALIBRATE THIS TECHNIQUE OF PROBING PLASMA ELECTRIC FIELDS. OUR RESULTS WILL BE COMPARED TO THEORETICAL MODELS OF STATIC AND OSCILLATORY MACROSCOPIC E-FIELDS ASSOCIATED WITH RECONNECTION, PARTICLE ACCELERATION, AND PLASMA WAVES IN SOLAR STRUCTURES.

* information listed above is at the time of submission.

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