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PLASMA INSTABILITIES IN ELECTRON CYCLOTRON RESONANCE HEATED ION SOURCES

Award Information

Agency:
Department of Energy
Branch:
N/A
Award ID:
10828
Program Year/Program:
1990 / SBIR
Agency Tracking Number:
10828
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
SPIRE CORPORATION
1 PATRIOTS PARK BEDFORD, MA 01730-2396
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 1990
Title: PLASMA INSTABILITIES IN ELECTRON CYCLOTRON RESONANCE HEATED ION SOURCES
Agency: DOE
Contract: N/A
Award Amount: $499,646.00
 

Abstract:

THERMAL ENERGY AND PARTICLE TRANSPORT PHENOMENA HAVE EXTREMELY IMPORTANT EFFECTS ON THE PRODUCTION OF HIGH CHARGE-STATE IONS IN HIGH FREQUENCY, HIGH POWER ELECTRON CYCLOTRON RESONANCE (ECR) ION SOURCES. RECENT EXPERIMENTAL RESULTS INDICATE THAT PARTICLE TRANSPORT IN THE DIRECTION PERPENDICULAR TO THE MAGNETIC FIELD IS AN ORDER OF MAGNITUDEGREATER THAN THAT PREDICTED BY CLASSICAL COLLISION TRANSPORTTHEORY. THESE ANOMALOUS TRANSPORT PROCESSES, BELIEVED TO BEINDUCED BY PLASMA MICRO-INSTABILITIES, ARE VERY HARMFUL TO PRODUCTION OF HIGHLY CHARGED IONS. THIS PROJECT INVOLVES A THEORETICAL INVESTIGATION OF PLASMA MICRO-INSTABILITIES DRIVEN BY DENSITY AND TEMPERATURE GRADIENTS IN ECR ION SOURCES. IN PARTICULAR, THE ONSET OF THE INSTABILITIES AND THEIR GROWTH RATE DEPENDENCE ON MEASURABLE PLASMA PARAMETERS--E.G., ELECTRON AND ION TEMPERATURES, ELECTRON AND ION DENSITIES, AND MAGNETIC FIELD--WILL BE STUDIED USINGTHE VLASOV EQUATION. QUASI-LINEAR CALCULATIONS WILL ALLOW STUDY OF BOTH THERMAL ENERGY AND PARTICLE TRANSPORT INDUCED BY THE RELEVANT MICRO-INSTABILITIES. TRANSPORT MODELS WILL BE PROPOSED AND COMPARED WITH EXPERIMENTS; TECHNIQUES FOR EXPERIMENTAL VERIFICATION OF THE THEORETICAL PREDICTIONS WILL BE DEVELOPED.

Principal Investigator:

Dr Yi-kang Pu
Principal Investigator
6172756000

Business Contact:

Small Business Information at Submission:

Spire Corp.
Patriots Park Bedford, MA 01730

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No