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Inelastic neutron scattering in SeTe glasses
Journal of Non-Crystalline Solids, 1990Abstract Inelastic neutron scattering has been used to study the excitation spectra g(E) of a series of four SexTe1−x glasses, with x = 0.95, 0.90, 0.80, 0.70, at two temperatures, 100K and 200K. The low frequency spectra show a breakaway from an (energy)2 dependence for g(E) to a higher power dependence, which is typical of the density of states for
CARINI, Giuseppe +5 more
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Inelastic scattering of neutrons by anharmonic crystals
Solid State Communications, 1963Recent experiments have been able to observe the widths of the one-phonon resonances in the inelastic scattering of neutrons by crystals. The purpose of this paper is to provide a theoretical framework within which to determine the phonon frequencies and lifetimes from these experiments. When a crystal has anharmonicities interference effects can occur
VINAY AMBEGAOKAR +2 more
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Inelastic Neutron Scattering, Applications
1999The application of both coherent and incoherent neutron scatting techniques to problems in chemistry, physics, engineering catalysis and polymers is described. The various different types of structural and dynamic molecular information that can be obtained are illustrated.
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Inelastic neutron scattering in Nb93
Nuclear Physics, 1959Abstract Study of gamma ray spectra following inelastic neutron scattering in Nb 93 has been made at bombarding energies ranging from 0.81 to 2.25 MeV. Measurement of thresholds for the gamma rays and the gamma-gamma coincidence spectra has enabled us to work out a level scheme for Nb 93 . The energies of the two levels previously reported have been
N. Nath +3 more
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Neutron inelastic scattering at SINQ
Neutron News, 2000Abstract Quantum spin systems featuring a singlet ground state and a magnetic excitation gap have been attracting much interest recently, both theoretically and experi-mentally. Despite the conclusive insights which neutron scattering can provide in such compounds, only a limited number of complete inelastic investigations has been presented so far ...
N. Cavadini +2 more
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Inelastic Scattering of Neutrons by Thorium
Proceedings of the Physical Society, 1959The inelastic scattering of neutrons of up to 1.6 MeV energy by natural thorium and uranium has been studied using the millimicrosecond time of flight technique. Scattering has been observed to levels in 232Th at ~ 0.05, 0.150 ± 0.015, (0.30 + 0.02), 0.79 (two levels) and 0.09 ± 0.02 MeV.
R Batchelor, J H Towle
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1996
A brief survey is given of the theoretical principles, practical aspects and applications of inelastic magnetic neutron scattering.
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A brief survey is given of the theoretical principles, practical aspects and applications of inelastic magnetic neutron scattering.
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1986
Experiments with thermal neutrons are most useful in the study of lattice vibrations. The advantage stems from the basic nature of the neutron: The De Broglie wavelength of a thermal neutron is of the same order of magnitude as the interatomic distances in crystals, and the energy of a thermal neutron is of the same order as the energy of a lattice ...
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Experiments with thermal neutrons are most useful in the study of lattice vibrations. The advantage stems from the basic nature of the neutron: The De Broglie wavelength of a thermal neutron is of the same order of magnitude as the interatomic distances in crystals, and the energy of a thermal neutron is of the same order as the energy of a lattice ...
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Inelastic neutron-deutron scattering
Nuclear Physics A, 1969Abstract A theory of the charge exchange process d(n,p)2n is presented which is based on an earlier theory of slightly inelastic proton-deutron scattering. Calculations of the 150 MeV measurements of Measday are found to be in good agreement with experiment for protons scattered through 20° or less.
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Inelastic neutron scattering in CeB6
Physics Letters A, 1996Abstract A theoretical interpretation of the low temperature shift of the Γ 7 – Γ 8 frequency, i.e., the crystal field gap, which has been experimentally observed by Raman and neutron inelastic scattering is proposed. The origin of this shift is attributed to the collective modes caused by the orbital degrees of freedom.
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