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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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Photothermal ionization spectroscopy of germanium, doped in the impurity-band conduction range with gallium acceptors and with thermal oxygen donors, reveals that the donors and acceptors compensate each other at temperatures higher than about 5K, but that the impurities coexist as neutral donors and acceptors at lower temperatures.
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Mass flow rate of gas evolution from burning solid rocket propellant during transient depressurization of combustion chamber
Conservation equations coupled with mass balance equation to produce method of computing transient burning rates in solid propellant motors
Rate coefficient for primary process in removing molecular nitrogen in high vibrational levels from active nitrogen by N atoms
Tensile, fatigue, and creep rupture properties of extruded nickel-based aluminum, titanium carbide, and beryllium oxide alloys and aluminum-based silicon, copper, and iron alloys
A system is described for the measurement of excited state reaction times in the nanosecond range. A flowing afterglow produces large populations of chemically unstable species, and a pulsed, tuneable dye laser is used to selectively pump these into the reacting excited state. The transient fluorescence from the populations of reactants and end products is used to determine reaction lifetimes and yields. This radiatron is collected with a photon counting system which logs arrival times of spectrally dispersed photons with 10 nanosecond resolution.
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