Results 181 to 190 of about 3,134 (204)

Quasielastic light scattering from rutile

Physical Review B, 1999
Quasielastic light scattering consisting of two components has been observed in single crystals of rutile (TiO{sub 2}). The broad component with a linewidth of 330 GHz at 297 K becomes narrower with decreasing temperature. In contrast, the narrow component, which has a linewidth of 1.1 GHz at 297 K, broadens as the temperature decreases.
A. Koreeda, M. Yoshizawa, S. Saikan, M. Grimsditch   +3 more
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Quasielastic electron scattering from nuclei

Nuclear Physics A, 1977
We present a unified approach to the calculation of the quasielastic electron scattering cross section at different momentum transfer, within the framework of the Fermi gas model. This is achieved by introducing a momentum-dependent potential to describe the nucleon single-particle energy spectrum.
F.A. Brieva, A. Dellafiore
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Internal Viscosity and Quasielastic Scattering

The Journal of Chemical Physics, 1971
The hypotheses leading to internal viscosity of polymers are formulated in terms of the neutron incoherent quasielastic scattering law. The mean squared displacement, calculated in the free draining limit, is obtained as an analytical function of the internal viscosity parameter and is shown to decrease uniformly as this parameter increases.
R. Bidaux, J. P. Cotton, B. Farnoux, G. Jannink   +3 more
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Quasielastic light scattering in silicon

Journal of Physics C: Solid State Physics, 1984
An investigation of the origin of quasielastic light scattering from silicon surfaces, first observed by Sandercock (1972, 1978) is described. Measurements have been made of the dependence of the quasielastic spectrum upon temperature, wavevector, doping level, and polarisation and intensity of incident light.
M W Anderson, S M Lindsay, R T Harley
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Quasielastic Electron Scattering on 65Cu

AIP Conference Proceedings, 2007
The pioneer method for extraction of quasielastic part from the spectrum of scattered electrons is proposed. The essence of the method is in simultaneous multipole analysis of the mix of quasielastic and resonant formfactors. The identification of resonant peaks and quasielastic part of the formfactor have been held not in scattered electron spectra ...
V. Denyak, S. A. Paschuk, H. R. Schelin, V. Khvastunov   +3 more
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Inelastic and quasielastic neutron scattering

Current Opinion in Solid State and Materials Science, 1997
Inelastic neutron scattering is a technique for measuring the dynamics of condensed matter on a microscopic scale. Several dynamical regimes can be probed, including atomic momentum distributions, vibrations, and relaxation phenomena. Recent work has been carried out to investigate the dynamics of disordered materials.
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Quasielastic light scattering in silicon

Physical Review B, 2000
A dominant, broad central mode in the Brillouin spectrum of silicon was first reported by Sandercock in 1978. This feature was later ascribed to a two-phonon difference scattering process. However, the issue of quasielastic scattering in silicon has remained a major outstanding problem in Brillouin scattering, because similar central modes in other ...
Stoddart, P. R., Comins, J. D.
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Quasielastic light scattering in oxygen-ion conductors

Physical Review B, 1986
The spectra, temperature dependence, and depolarization ratio of the quasielastic light scattering (QELS) in cubic zirconia are studied in the frequency range 0.04--1000 cm and the temperature range 300--1500 K by using a tandem Fabry-Perot interferometer.
, Suemoto, , Ishigame
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Quasielastic light scattering studies of tubulin aggregation

Archives of Biochemistry and Biophysics, 1987
A quasielastic light scattering study of purified tubulin has resulted in a monomer diffusion coefficient of 6.0 X 10(-7) cm2/s. In an attempt to characterize the small tubulin oligomers which are predicted to form as intermediates in the self-assembly into double rings, magnesium ions (10 mM) were incorporated into the PG (10 mM NaPi, 0.1 mM GTP, pH 7.
W, Howard, S N, Timasheff
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Quasielastic electron scattering from nuclei

Annals of Physics, 1980
Abstract Inelastic electron scattering is studied in terms of the “characteristic function” F ( t ), i.e., the Fourier transform of the response function with respect to the energy transfer to the nucleus. Analytic properties of F ( t ) are discussed as well as moment and cumulant expansions.
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