Now showing items 1-10 of 81
Frequency-wave number array processing
(Acoustical Society of America, 1981-03)
Most array signal processing systems use delay-and-sum beamforming to estimate source bearings. This paper demonstrates the close relationship between beamforming and frequency-wavenumber spectrum analysis. The latter ...
Resistivity and galvanomagnetic coefficients of iron group metallic glasses with chromium substitutions
(American Institute of Physics, 1982)
Magnetic field and temperature dependences of the electrical resistivities and Hall resistivities were measured for the metallic glass ferromagnets Fe13Ni60Cr5Si10B12, Fe37Ni36Cr5Si10B12, Fe81B13.5Si3.5C2, and Fe5Co75Si15B5. ...
Spectral density and magnetic susceptibility for the asymmetric degenerate Anderson model
(American Physical Society, 1984-08)
With the use of a new diagrammatic formulation, two coupled integral equations for the self-energy functions of the f hole and f particle in the asymmetric degenerate Anderson model are solved numerically. All the diagrams ...
Is the surface brightness spectrum of the coma cluster radio halo inverted
(EDP SCIENCES, 1986-04)
Comparison of published maps of the Coma Cluster radio halo at 430 and 1400 MHz (Hanisch, 1980) reveals that the spectrum of the surface brightness is inverted or flat over most of the extent of the 1400 MHz diffuse emission. ...
Universality classes for critical wetting
(American Physical Society, 1985-08)
The systematics of the wetting transition at solid-gas interfaces in systems interacting with inversepower-law potentials is investigated. The correct form of the effective Hamiltonian for l, the interfacesubstrate separation, ...
the semiclassical limit of quantum dynamics. I. time evolution
(AIP Publishing, 1988-02)
The ℏ→0 limit of the quantum dynamics determined by the Hamiltonian H(ℏ) =−(ℏ2/2m)Δ+V on L 2(R n ) is studied for a large class of potentials. By convolving with certain Gaussian states, classically determined asymptotic ...
Hard-core repulsive interactions in even-parity electron pairings for heavy-fermion systems
(American Physical Society, 1987-03)
By studying the Anderson lattice Hamiltonian with spin-orbit coupling using an auxiliary boson method, we have examined the hard-core repulsive interactions in heavy-fermion materials. As a consequence of the anisotropy ...
resonance fringes in the two-photon absorption with a doppler-shift
(American Physical Society, 1980-09)
The two-photon absorption initiated by two coherent beams is considered. It is shown that the resonance fringe variation, which appeared in the Doppler-free two-photon absorption of pulsed laser beams, can also be observed ...
1/N expansion for the degenerate Anderson model in the mixed-valence regime
(American Physical Society, 1983-07)
The 1N expansion method for the degenerate Anderson model is formulated. N is the degeneracy factor of one of the f-electron configurations. Various ground-state properties are calculated. Excellent agreement with the ...
on the zeros of the dispersion function in particle transport theory
(AIP Publishing, 1986-06)
The zeros of the dispersion function that arise in particle transport with anisotropicscattering are studied. An algebraic test for the number of zeros is presented.