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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Performance characteristics of parallel plane, variable spaced thermionic converter with tungsten emitter and molybdenum-niobium collector
Ablation chars, carbon and graphite spectral emittance and reflectance as function of wavelength and temperature, noting applications to atmospheric entry heat shielding
Series emittance thermal control coatings of polymeric dielectric films overlaying reflectors vacuum exposed to UV, X ray and proton radiation
Thermal emittance of Cu measured in vacuum in spherical enclosure by calorimetric method to investigate oxidation effect
Calorimetric measurements determining total hemispheric emittance of thin gold films as function of temperature, demonstrating film thickness effect
Ionization gage with reverse biased silicon carbide p-n junction hot electron emitter as source
Nonuniform emitter current distribution effect on power transistor thermal stability, discussing temperature distribution effects
Reflectance measurements of directional spectral emittance of black body cavities with specific geometries, using laser source and integrating hemi-ellipsoid
Emitter applies to devices in which a plasma is generated by electron bombardment. Device is conventional hollow cathode modified by addition of integral keeper cap containing small aperture which encloses outlet of the cathode and is held in position by ceramic tube.
Comparison of thermionic tungsten /110/ converter performances with niobium collectors and nickel collectors at various emitter, collector and cesium reservoir temperatures
Thermionic cesium diode converter with cavity emitters
Numerical analysis of relationship between current, voltage, emitter temperature, and collector temperature of cesiated thermionic converter
Measurement of total hemispherical emittance for chromel and alumel thermocouple wires in inert atmosphere at high temperatures
Design and evaluation of cylindrical out-of-pile thermionic converter test vehicle to determine performance of tungsten emitters with preferred crystal orientation
High work function stable faceted W thermionic emitter surface preparation by electroetching and vapor deposition
Calorimetric measurements determining total hemispheric emittance of thin gold films as function of temperature, demonstrating film thickness effect
Thermal and electrical characteristics of two nuclear type cylindrical converters with nonuniform emitter temperature
Chemically vapor deposited deep etched tungsten emitter for high performance cylindrical thermionic converter