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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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Quartz crystal quantitatively measures molecular fluxes emanating from and condensing on spacecraft surfaces. Vibrating in a thickness shear mode, the crystal is frequency sensitive to changes in mass on its surface and can measure a fractional monolayer of a condensate.
Calibration of working standards of spectral irradiance of quartz iodine lamps
Capture coefficient of highly directed flow of gaseous carbon dioxide and water vapor on cryogenic quartz crystal microbalance
Analysis of impurities in magnesium oxide materials by mass spectrographic, chemical, thermogravimetric, vacuum-fusion furnace, quartz tube graphite crucible furnace techniques
Rare earth trace element variations in anorthosite and quartz mangerite determined, using stable isotope dilution technique of analysis
Electron microprobe analysis of quartz and alumina darkening upon solar wind ion bombardment, noting existence of iron, tungsten and carbon in samples
Sensor consisting of superconductive film mounted on a dipstick measures the level of liquid helium in a Dewar flask. The sensor is made by depositing a thin film of niobium metal to a thickness of 2000 angstroms on a quartz substrate, which is then mounted on a graduated dipstick.
Internal reflection spectroscopy of powdered quartz fractions
Damping of piezoelectric quartz crystal driven in torsional mode of vibration in liquid helium 3 and helium 4
Deposition of integral quartz coatings on silicon solar cells by radio frequency sputtering
Hugoniot equation of state measurements were made on Coconino sandstone, Vacaville basalt, Kaibab limestone, Mono Crater, pumice and Zelux (a polycarbonate resin) for pressures to 2 Mb. A single data point was obtained for fused quartz at 1.6 Mb. In addition to the hugoniot studies, the uniaxial compressive stress behavior of Vacaville basalt and Zelux was investigated at strain rates from about 10(exp -5)/sec to 10(exp 3)/second. The data presented include the stress - strain relations as a function of strain rate for these two materials.
Spectrophotometry of lunar topography based on observations by quartz spectrometer and horizontal telescope
Ultrasonic attenuation in imperfect insulating crystals calculated by thermodynamic Green functions method, noting temperature dependence in neutron irradiated quartz
Two quartz crystal oscillators monitor and control the thickness and the rate of thin film deposition. The outputs of both oscillators, one exposed to mass and heat and the other exposed only to heat, were mixed and the difference frequency was used as the indication of film thickness.
Quartz crystal microbalance to determine amount of outgassed material redeposited in thermal-vacuum environment
Luminescence mechanisms of optical glasses and quartzes excited by charged particles
Quartz-insulated, single-wire thermocouples installed on thin-wall rocket cooling tubes to measure hot-gas-side wall temperatures