J. Phys. IV France 10 (2000) Pr7-333-Pr7-336
Neutron spectroscopy of hydrated disaccharides : Trehalose vs. sucroseS. 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