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  1. No Access

    Article

    Diffusive Motion of Alkali Atoms in Graphite: A Quasielastic Neutron Scattering Study

    We have studied the diffusive motion of alkali atoms in thermodynamic equilibrium in RbC24 by quasielastic neutron scattering. The neutron spectra show Lorentzian line profiles. The widths increase with increasin...

    H. Zabel, A. Magerl, J. J. Rush, A. J. Dianoux in MRS Online Proceedings Library (2011)

  2. No Access

    Article

    Atomic dynamics of an Al0.62Cu0.255Fe0.125 icosahedral quasicrystal

    The atomic dynamics of an Al0.62Cu0.255Fe0.125 icosahedral quasicrystal is investigated using inelastic neutron scattering (the isotopic contrast method). The partial vibrational spectra of copper, iron, and alum...

    P. P. Parshin, M. G. Zemlyanov, A. V. Mashkov, R. A. Brand… in Physics of the Solid State (2004)

  3. No Access

    Article

    Low-frequency dynamical response of confined water in normal and supercooled regions obtained by IINS

    We analyzed incoherent inelastic neutron scattering spectra of water confined in a nanoporous Gelsil matrix, with very small pore diameter (26 Å). The study is addressed to the evolution of the one-phonon ampl...

    V. Crupi, D. Majolino, P. Migliardo, V. Venuti, A.J. Dianoux in Applied Physics A (2002)

  4. No Access

    Article

    Atomic-partial vibrational density of states of i-AlCuFe quasicrystals

    We present new results on the separation of the atomic-partial vibrational density of states for the ternary quasicrystal i-Al62Cu25.5Fe12.5. The decomposition into three atomic-partial functions, Al-, Cu- and Fe...

    P.P. Parshin, M. Zemlyanov, R.A. Brand, A.-J. Dianoux, Y. Calvayrac in Applied Physics A (2002)

  5. No Access

    Article

    Relaxational dynamics in dry and humid DNA

    The influence of hydration on the self-correlation of DNA-hydrogens has been measured by using inelastic neutron scattering. The range of GHz to THz could be covered by combining back-scattering and time-of-fl...

    H. Grimm, A.P. Sokolov, A.J. Dianoux in Applied Physics A (2002)

  6. No Access

    Article

    A combined neutron crystallography/IQNS study of water around lysozyme

    This paper presents a combined structural and single-particle diffusive dynamics study of water around lysozyme, within triclinic crystals. Some interesting features in the solvent organization are reviewed, a...

    C. Bon, A.J. Dianoux, M. Ferrand, M. Lehmann in Applied Physics A (2002)

  7. No Access

    Article

    A combined MD-IQNS investigation of rotational disorder of guest molecules in thiourea inclusion compounds

    In thiourea inclusion compounds the host substructure comprises a hydrogen-bonded arrangement of thiourea molecules and contains 1-D channels within which guest molecules are located. These organic composite c...

    A. Desmedt, J.-C. Soetens, F. Guillaume, R.E. Lechner, A.-J. Dianoux in Applied Physics A (2002)

  8. No Access

    Article

    Slow Relaxation Process in DNA

    A dynamic transition at temperatures ∼200–230K is observed in manyhydrated bio-polymers. It shows up as a sharp increase of the mean-squaredatomic displacements above this temperature range. We present neutron...

    A.P. Sokolov, H. Grimm, A. Kisliuk, A.J. Dianoux in Journal of Biological Physics (2001)

  9. No Access

    Article

    Very fast relaxation in polycarbonate glass

    Relaxations in amorphous bis-phenol A polycarbonate are studied by neutron scattering, as a function of temperature below the glass transition. Two different processes are observed. One is very fast, with a ch...

    L. Saviot, E. Duval, J.F. Jal, A.J. Dianoux in The European Physical Journal B - Condense… (2000)

  10. No Access

    Article

    Slow relaxation process in DNA at different levels of hydration

    There are many speculations about the dynamic transition observed in hydrated bio-polymers at temperatures T ∼ 200 – 230 K being an important factor for enabling of their functions. The transition shows up as ...

    A.P. Sokolov, H. Grimm, A. Kisliuk, A.J. Dianoux in Journal of Biological Physics (2000)

  11. No Access

    Article

    Neutron scattering studies of the structure and dynamics of nanobundles of single-wall carbon nanotubes

    Elastic and inelastic neutron scattering are used to study the structure and dynamics of single-wall carbon nanotubes (SWNT) self-assembled into nanobundles (NBSWNT). Suspensions of NBSWNT are characterized by...

    S. Rols, E. Anglaret, J.L. Sauvajol, G. Coddens, A.J. Dianoux in Applied Physics A (1999)

  12. No Access

    Article

    The Vibrational Density-of-States of Nanobundles of Single Wall Carbon Nanotubes: An Inelastic Neutron Scattering Study

    The phonon density of states of single-wall carbon nanotubes (SWNT) was measured by inelastic neutron scattering (INS) in a large energy range (0 to 120 meV). New information on the vibrational dynamics of SWN...

    S. Rols, Z. Benes, J. L. Sauvajol, P. Papanek… in MRS Online Proceedings Library (1999)

  13. No Access

    Article

    Strong anisotropic nematic order in liquid crystal polymers: [4] a quasi-elastic neutron scattering study

    From quasi-elastic neutron scattering experiments performed in glassy, nematic and isotropic phases, the dynamics of oriented samples of strong anisotropic side-on fixed liquid crystal polymers have been analy...

    S. Lecommandoux, F. Hardouin, A.J. Dianoux in The European Physical Journal B - Condense… (1998)

  14. No Access

    Chapter

    Dynamics of N-Nonadecane Chains in Urea Inclusion Compounds as seen by Incoherent Quasielastic Neutron Scattering and Computer Simulations

    Long chain hydrocarbon molecules such as n-alkanes, aliphatic carboxylic acids, α,ω-dihalogenoalkanes and others are known to form inclusion adducts with urea [1]. In these inclusion compounds, the hydrogen bonde...

    M. Souaille, J. C. Smith, A.-J. Dianoux… in Observation, Prediction and Simulation of … (1995)

  15. No Access

    Article

    Inelastic Neutron Scattering by Pristine And Doped Phases of Polyacetylene

    Inelastic incoherent neutron-scattering spectra of cis-, trans- and Na-doped polyacety-lene are presented. The experiments were performed with time-of-flight and filter-analyzer spectrometers on stretch-oriented ...

    P. Papanek, J. E. Fischer, J. L. Sauvajou, A. J. Dianoux… in MRS Online Proceedings Library (1994)

  16. No Access

    Chapter

    Workshop session on experimental investigation of structural and dynamic features in varying conditions

    This session centered around the comparison of relaxation times measured by different techniques. First A. Geiger made the point that quadrupolar relaxation is one of the best methods for obtaining reorientati...

    S. H. Chen, A. J. Dianoux, A. Laubereau in Hydrogen Bond Networks (1994)

  17. No Access

    Chapter

    Phonon Density of States of (Ba,K) (Pb,Bi,Sb)O3 Ceramic Oxides

    The phonon density of states of the ceramic superconductors Ba0.6K0.4BiO3 (Tc = 30K), BaPb0.75Bi0.25O3 (Tc = 13K) and BaPb0.75Sb0.25O3 (Tc = 3.5K) have been measured by the neutron time-of-flight technique with e...

    A. J. Dianoux, M. J. Rosseinsky… in Physics and Materials Science of High Temp… (1992)

  18. No Access

    Chapter

    Molecular Motions of Hydrocarbon Chains (Decylammonium, n-Nonadecane) in Their Dynamically Disordered Phases: An Incoherent Neutron Scattering Study

    It is well known that many compounds containing hydrocarbon chains such as liquid crystals or lipid membranes undergo solid state phase transitions prior to melting. In these intermediate phases, between the c...

    F. Guillaume, C. Sourisseau, A. J. Dianoux in Phase Transitions in Soft Condensed Matter (1989)

  19. No Access

    Chapter

    Quasi-Elastic and Inelastic Neutron Scattering

    The method of quasi-elastic and inelastic neutron scattering is outlined and its usefulness for studying molecular motions in condensed matter is stressed. After a short introduction to the theory of neutron s...

    A. J. Dianoux in The Time Domain in Surface and Structural Dynamics (1988)

  20. No Access

    Chapter and Conference Paper

    The Influence of Electrons on the Tunneling State of a Hydrogen Atom in a Metal

    The thermal destruction of a tunneling state in a molecular crystal, which becomes observable in a neutron spectroscopic experiment say above 10 K, is generally attributed to interactions with phonons. If the ...

    H. Wipf, D. Steinbinder, K. Neumaier… in Quantum Aspects of Molecular Motions in So… (1987)

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