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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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Direct one phonon spin-lattice relaxation times for positive trivalent Nd and U ions in calcium difluoride at tetragonal symmetry sites
Spin-lattice interactions of ions with unfilled F-shells measured by ESR in uniaxially stressed crystals
Si lattice vibrations, calculating phonon dispersion curves from microscopic model by dielectric screening theory
Development of lattice model for composite materials
Structural stability of lattice column of longerons and helical braces
Multiphonon orbit-lattice relaxation of excited states of rare earth ions in crystals, measuring fluorescence lifetimes, quantum efficiencies and transition rates
Displacement correlations and frequency spectra for mass disordered lattices, deriving cluster expansion for phonon Green function
Proton spin-lattice relaxation time in dilute liquid and gas solutions of orthohydrogen in parahydrogen, noting dependence on temperature, density and composition
Rhenium effect on lattice solid solubility of oxygen in tungsten, calculating rhenium-oxygen cluster minimum binding free energy
Relativistic approximation for valence bands in cubic lattices, and photoemission changes of silver bromide during cooling
Two parameter model for lattice vibrations applicable to diamond structured crystals, calculating phonon dispersion curves from dielectric screening theory
Au, Ag and Al films evaporation in ultrahigh vacuum on LiF and MgO surfaces, showing insignificant role of lattice misfit for epitaxy
Rhenium alloying effect on room temperature ductility of Cr, Mo and W, measuring lattice parameters by Debye-Scherer method
Chromium lattice vibrational properties based on fourth-nearest-neighbor tensor force model, obtaining agreement with inelastic neutron diffraction data and elastic constants
Isomer shift, Mossbauer recoil free fraction and nuclear quadrupole splitting for Fe57 in iron fluoride measured for lattice dynamics, fine and hyperfine structure
Lattice planes and interplanar spacings of small vapor deposited gold crystals, using transmission electron microscopy
Vortex-lattice FORTRAN program for estimating subsonic aerodynamic characteristics of complex planforms
Computer program for estimating subsonic aerodynamic characteristics of various aerodynamic configurations is presented. Program represents lifting planforms with vortex-lattice. Specific aerodynamic characteristics to be determined are described. Examples and typical running times of various types of configurations are provided.