Now showing items 11-20 of 222
Simulation of dynamic fracture of an impact-loaded brittle solid
(IOP Publishing Ltd, 1994-11-01)
A new model for simulating dynamic fracture in impact-loaded solids is presented. This model is based upon the traditional molecular dynamics procedure, but accounts for the irreversible nature of the fracture process by ...
Spectral and dynamic properties of a 2D Luttinger liquid with current-current interactions
(IOP Publishing Ltd, 1994-04-25)
We calculate the Green function, particle-hole susceptibility and Cooper pair susceptibility of a 2D Luttinger liquid that results from an electron gas with long-range current-current interactions. The Haldane bosonization ...
Homo- and Heteronuclear Multiple-Quantum Filters for Measurement of NMR Isotope Shifts
(Elsevier, 1994-03)
The measurement of NMR isotope shifts as mechanistic probes can be complicated by mixtures of isotopomers. Homo- and heteronuclear NMR techniques based on multiple-quantum filtration are presented and shown to be a useful ...
High accuracy determination of the shape of the efficiency curve of the HPGe detector in the energy range 900 to 1300 keV
(Elsevier, 1994-12-30)
A method for high accuracy characterization of the shape of a High Purity Germanium (HPGe) detector efficiency curve has been developed. Radionuclides with decay schemes having at least two [gamma] lines, for which the ...
The peak in the thermal conductivity of Cu-O superconductors: Electronic or phononic origin?
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1994-04)
The thermal conductivity К of hole-doped Cu-O plane high- T c perovskites exhibits a dramatic increase below T c which results in a pronounced peak near T c /2. The origin of this peak was initially thought to arise from ...
Low energy kinetic threshold in the growth of cubic boron nitride films
(The American Institute of Physics, 1994-04-04)
We report the growth of cubic boron nitride (cBN) films by magnetron sputtering on Si (100) substrates. The films are grown in the presence of negative substrate bias voltages and a nitrogen plasma produced by an electron ...
Structure of the propene⋅sulfur dioxide complex
(The American Institute of Physics, 1994-01-01)
The rotational spectra of eight isotopomers of the propene⋅SO2 complex have been observed with a Fourier transform microwave spectrometer. The rotational constants of the normal species are A=4269.564 MHz, B=1577.2661 MHz, ...
The Microwave Spectrum and Structure of the Argon-Acetaldehyde van der Waals Complex
(Elsevier, 1994-08)
The argon-acetaldehyde van der Waals dimer was studied by Fourier transform microwave spectroscopy. Two tunneling motions were observed in the spectrum, an inversion through a planar configuration and methyl interal rotation. ...
Transverse Vibration of an Axially Accelerating String
(Elsevier, 1994-01-13)
The transverse vibration of an axially accelerating string is investigated. The equation of motion is developed using Hamilton's principle. The resulting partial differential equations are discretized using Galerkin's ...