J. Phys. IV France
Volume 10, Numéro PR7, May 2000
International Workshop on Dynamics in Confinement
Page(s) Pr7-333 - Pr7-336
International Workshop on Dynamics in Confinement

J. Phys. IV France 10 (2000) Pr7-333-Pr7-336

DOI: 10.1051/jp4:2000768

Neutron spectroscopy of hydrated disaccharides : Trehalose vs. sucrose

S. Magazù1, C. Branca1, A. Faraone1, G. Maisano1, F. Migliardo1, P. Migliardo1, V. Villari1 and H.D. Middendorf2

1  Dipartimento di Fisica and INFM, Università di Messina, P.O. Box 55, 98166 Messina, Italy
2  Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, U.K.

Neutron time-of-flight spectra for two hydrated disaccharides at 300 K show significant differences with respect to (i) discrete features in the 10 to 70 meV region, and (ii) a broad low-frequency band centred on 5.5-6 meV. We analysed these in terms of generalised frequency distributions. The peak as well as integrated intensities of (ii) between 0.2 and 10 meV differ markedly in their dependence on momentum transfer.

© EDP Sciences 2000