FIELD EMISSION ENHANCEMENT AND CONFINEMENT FROM SUPERCONDUCTIVE SURFACES

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$49,954.00
Award Year:
1991
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
16931
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Tetra Corp
4905 Hawkins Ne, Albuquerque, NM, 87109
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
THIS PROJECT STUDIES THE FEASIBILITY OF USING A SUPERCONDUCTIVE SURFACE AS THE SOURCE OF ELECTRONS FOR ELECTRON-BEAM DIODE APPLICATIONS. CERAMIC-BASED MATERIALS SUCH AS YBA2CU3O6+X WILL BE TESTED. THE MATERIAL WILL BE DEPOSITED AS A COATING ON A METAL ELECTRODE, AND TESTED IN SOLID FORM. THIS WORK WILL CORRELATE THE FIELD-EMISSION CHARACTERISTICS OF THE SUPERCONDUCTIVE SURFACE WITH THE FIELD-EMISSION FORMULATIONS OF FOWLER-NORDHEIM AND RICHARDSON-DUSHMAN. THE FEASIBILITY OF USING SUPERCONDUCTIVE MATERIALS AS ELECTRON SOURCES FOR BEAM DIODES WILL BE DETERMINED BY DEMONSTRATING COATING INTEGRITYAND SUPERCONDUCTIVE-MATERIAL ELECTRON EMISSION UNDER DC AND HIGH-VOLTAGE PULSED REGIMES. IF THIS CONCEPT IS FEASIBLE, CURRENT DENSITIES OF MORE THAN 100 A/CM(2) WILL BE DEMONSTRATED DURING THE PHASE I PROGRAM. THIS PROJECT STUDIES THE FEASIBILITY OF USING A SUPERCONDUCTIVE SURFACE AS THE SOURCE OF ELECTRONS FOR ELECTRON-BEAM DIODE APPLICATIONS. CERAMIC-BASED MATERIALS SUCH AS YBA2CU3O6+X WILL BE TESTED. THE MATERIAL WILL BE DEPOSITED AS A COATING ON A METAL ELECTRODE, AND TESTED IN SOLID FORM. THIS WORK WILL CORRELATE THE FIELD-EMISSION CHARACTERISTICS OF THE SUPERCONDUCTIVE SURFACE WITH THE FIELD-EMISSION FORMULATIONS OF FOWLER-NORDHEIM AND RICHARDSON-DUSHMAN. THE FEASIBILITY OF USING SUPERCONDUCTIVE MATERIALS AS ELECTRON SOURCES FOR BEAM DIODES WILL BE DETERMINED BY DEMONSTRATING COATING INTEGRITYAND SUPERCONDUCTIVE-MATERIAL ELECTRON EMISSION UNDER DC AND HIGH-VOLTAGE PULSED REGIMES. IF THIS CONCEPT IS FEASIBLE, CURRENT DENSITIES OF MORE THAN 100 A/CM(2) WILL BE DEMONSTRATED DURING THE PHASE I PROGRAM.

* information listed above is at the time of submission.

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