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3. Investigation of high-energy inelastic neutron scattering from liquid water confined in silica xerogel

Author

PERELLI CIPPO, E, Andreani, C, Casalboni, M, Dire, S, FERNANDEZ CANOTO, D, Gorini, G, Imberti, S, Pietropaolo, A, Prosposito, P, Schutzmann, S, Senesi, R, Tardocchi, M, ANDREANI, C, CASALBONI, M, DIRE, S, IMBERTI, S, PIETROPAOLO, A, PROSPOSITO, P, SCHUTZMANN, S, SENESI, R, TARDOCCHI, M., GORINI, GIUSEPPE, PERELLI CIPPO, E, Andreani, C, Casalboni, M, Dire, S, FERNANDEZ CANOTO, D, Gorini, G, Imberti, S, Pietropaolo, A, Prosposito, P, Schutzmann, S, Senesi, R, Tardocchi, M, ANDREANI, C, CASALBONI, M, DIRE, S, IMBERTI, S, PIETROPAOLO, A, PROSPOSITO, P, SCHUTZMANN, S, SENESI, R, TARDOCCHI, M., and GORINI, GIUSEPPE

Abstract

High-energy inelastic neutron scattering (HINS) employing epithermal neutrons is a new technique under development at the VESUVIO spectrometer at ISIS, aiming to access the high-energy and low wave-vector transfer region in neutron scattering experiments at eV energies. New neutron detectors have been developed for HINS based on the resonant detector (RD). These make use of the detection of prompt gammas after neutron absorption in an analyzer foil. The RD is used in the very low angle detector (VLAD) bank, which will extend the explored kinematical region to momentum transfer <10 Å-1, whilst still keeping energy transfer >300 meV. The final VLAD will cover the scattering range 1-5° and will be installed by the end of 2005. The results obtained with prototype VLAD detectors on polycrystalline ice and liquid water in silica xerogels provide a demonstration of the feasibility of the measurements under realistic conditions. © 2006 Elsevier B.V. All rights reserved.

Published
2006

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