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Results for “semiclassical”

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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NASA NTRS2018

Semiclassical Calculations of Stark Broadening Parameters of He I Lines Revisited

Stark broadening parameters for spectral lines of He I lines, calculated using numerically improved semiclassical formalism of Griem are reported and favorably compared with the original results of Griem. The comparison with other sets of data is carried out and results presented also. In addition, new Stark broadening parameters are available now in extended electron temperature range from 2500 K to 80000 K.

Physics↗

NASA NTRSDate not supplied

Semiclassical and VSCF/VCI Calculations of the Vibrational Energies of trans - and gauche -Ethanol Using a CCSD(T) Potential Energy Surface

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Riccardo Conte↗

NASA NTRS1964

Semiclassical calculation of inelastic cross sections for electron-cesium atomic collisions

Calculation of inelastic cross sections for electron-cesium atomic collisions

INELASTIC COLLISION↗

NASA NTRS1965

Higher-order stationary-phase approximations in semiclassical scattering.

Higher order stationary-phase approximations in calculating corrections to classical differential cross section for elastic scattering

SCATTERING CROSS SECTION↗

NASA NTRS1964

Higher-order Stationary Phase Approximations in Semiclassical Scattering

Stationary phase approximations on differential cross section expansion for elastic particle scattering mechanics

THEORETICAL PHYSICS↗

NASA NTRS1966

Semiclassical theory of the three-turning- point-problem.

Phase shift from scattering by atoms with attractive potentials, predicting virtual energy states for incident energies in three-turning point range

ENERGY SPECTRUM↗

NASA NTRS1967

The validity of the semiclassical method for the coupled channel atomic scattering problem

Stationary phase approximation for two-channel atomic scattering system amplitude

TWO-PHASE SYSTEM↗

NASA NTRS1967

Exact semiclassical theory for galvanomagnetic effects in metals

Closed form solution for conductivity tensor for magnetic field strength obtained from linearized Boltzmann equation for electron conduction distribution function

TENSOR FIELD↗

NASA NTRS1966

Impact expansions in classical and semiclassical scattering.

Impact expansions and interference patterns in atomic scattering theory for cases of forward scattering, backscatter, inversion problem and screened Coulomb potential approximation

SERIES EXPANSION↗

NASA NTRS1967

Semiclassical theory of proton transport in ice.

Proton mobility in ice when limited by lattice scattering calculated, using Boltzmann transport equation

ION MOBILITY↗

NASA NTRS1967

Semiclassical Theory of Elastic Perturbation

Transition probabilities formulation to explain perturbation effects in elastic differential scattering cross section measurements

Marchi, R. P.↗

NASA NTRS1967

Validity of the semiclassical method for the coupled-channel atomic scattering problem.

Stationary phase approximation for evaluation of scattering amplitudes of coupled channel atoms

Greenman, J. V.↗

NASA NTRS1969

Molecular hydrogen inelastic electron impact cross sections - A semiclassical method.

Electron impact cross sections for diatomic molecule ionization and excitation from modified Gryzinski theory, discussing results from molecular models

Hettel, H. J.↗

NASA NTRS1969

Semiclassical theory of a high-intensity laser.

Lamb theory of Doppler broadened gas laser extended to arbitrary intensities for single mode operation, calculating detuning curves and inversion densities

Lamb, W. E., Jr.↗

NASA NTRS1969

Radiative effects in semiclassical theory.

Unquantized field calculations extended to include atomic field effect on atom, predicting spontaneous decay rate from excited state and light frequency time dependence

Crisp, M. D.↗

NASA NTRS1969

Semiclassical theory of elastic perturbations.

Stueckelberg formulation for transition probabilities to interpret perturbation effects in elastic scattering differential cross section measurements

Marchi, R. P.↗

NASA NTRS1971

Semiclassical theory for molecular auto- ionization

Diatomic molecular autoionization model, calculating limit of high vibrational and electronic principal quantum numbers

Ritchie, B.↗

NASA NTRS1971

Semiclassical theory of vibrational excitation for diatomic molecules with conserved collision energy

Inelastic collision effects on vibrational excitation of diatomic molecules with conserved energy

Hansen, C. F.↗