Results 161 to 170 of about 1,803 (201)
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QENS and quasielastic Mössbauer spectroscopy for studying diffusion
Physica B: Condensed Matter, 1996QENS and quasielastic Mossbauer spectroscopy (QMS) are closely related in that both measure the double Fourier transform S(Q, ω) of the self-correlation function, which they deduce from scattering (QENS) and from resonant emission or absorption of nuclear γ radiation (QMS).
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Diffusion of acetylene embedded in Na–Y zeolite: QENS and MD simulation studies
Physica B: Condensed Matter, 2006 We report here the studies of the dynamics of acetylene molecules adsorbed in Na–Y zeolite cages using Quasielastic neutron scattering (QENS) and molecular dynamics (MD) simulation techniques.
Subhankur Mitra +2 more
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PFG NMR and QENS diffusion study of n-alkane homologues in MFI-type zeolites
Microporous and Mesoporous Materials, 2006 Recent methodological progress in pulsed field gradient (PFG) NMR and quasi-elastic neutron scattering (QENS) is exploited to enhance the range of diffusion measurement of the series of the n-alkane homologues in MFI-type zeolites (silicalite-1, ZSM-5 ...
Wolfgang Schmidt +2 more
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Li diffusive behavior of garnet-type oxides studied by muon-spin relaxation and QENS
Solid State Ionics, 2014 A diffusive behavior of Li+ ion in a garnet-type oxide, Li5 + xLa3ZrxNb2 − x012 with x = 0–2, has been investigated by both a positive muon-spin relaxation (μ+SR) and quasi-elastic neutron scattering (QENS) technique using powder samples.
Hiroshi Nozaki +2 more
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QENS investigation of the dynamics of starch saccharides
Physical Chemistry Chemical Physics, 2005We present here quasi-elastic neutron scattering results on D20 hydrated samples of amylose, one of the main saccharide components of starch. Two different sample hydrations (h = 0.5 and 1.0 g D2O (g dry amylose)-1 have been investigated in the temperature range 170 to 350 K.
DI BARI, Maria +3 more
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Neutron News, 1994
Abstract The Quasielastic Neutron Scattering workshop, held at Miramar Palace, San Sebastian, Basque Country (Spain) on September 26–28, 1993, was a natural continuation of the series started at Cumberland Lodge, Windsor, UK in 1992. There it was decided to establish periodic discussion forums to maintain the community in close contact during these ...
J. Colmenero, A. Alegría, J. Bermejo
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Abstract The Quasielastic Neutron Scattering workshop, held at Miramar Palace, San Sebastian, Basque Country (Spain) on September 26–28, 1993, was a natural continuation of the series started at Cumberland Lodge, Windsor, UK in 1992. There it was decided to establish periodic discussion forums to maintain the community in close contact during these ...
J. Colmenero, A. Alegría, J. Bermejo
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QENS and NMR Investigation of Reorientational Dynamics in C61H2
Journal of Physics and Chemistry of Solids, 1993The molecular dynamics of the dihydrofulleroid C61H2 [1] have been studied. Protonated and deuterated samples have been synthesized and characterized by 13C, 1H, 2H high resolution NMR, HPLC, TGA, DSC and mass spectrometry. The molecular dynamic has been studied by powder NMR, and Quasielastic Neutron Scattering.
CRISTOFOLINI, Luigi +3 more
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QENS investigation of filled rubbers
Applied Physics A: Materials Science & Processing, 2002The polymer segmental dynamics is investigated in a series of silica-filled rubbers. The presence of inert fillers in polymers greatly affects the mechanical and physical performance of the final materials. For example, silica has been proposed as a reinforcing agent of elastomers in tire production.
Triolo A. +9 more
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Neutron News, 2019
The origin of the QENS conferences series dates back to 1992, when its first edition—organized by Barbara Gabrys, Spencer Howells, Colin Carlile and Phil Salmon—was celebrated in Windsor, UK.
Arantxa Arbe, Juan Colmenero
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The origin of the QENS conferences series dates back to 1992, when its first edition—organized by Barbara Gabrys, Spencer Howells, Colin Carlile and Phil Salmon—was celebrated in Windsor, UK.
Arantxa Arbe, Juan Colmenero
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A particle jumping in an octahedron studied by QENS
Physica B: Condensed Matter, 2000Abstract We calculate the neutron incoherent scattering law due to a particle performing localized diffusional jumps in a confined environment of octahedral symmetry. An experimental realization for this model is provided by the fulleride Li12C60, where the Li ions diffuse within the octahedral void determined by the surrounding C60 spheres packed in
CRISTOFOLINI, Luigi +2 more
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