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Quasielastic incoherent neutron scattering study of the rotational dynamics of the water molecules in analcime

✍ Scribed by C. M. B. Line; B. Winkler; M. T. Dove

Publisher
Springer-Verlag
Year
1994
Tongue
English
Weight
866 KB
Volume
21
Category
Article
ISSN
0342-1791

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✦ Synopsis

The rotational motion of the water molecules in analcime has been investigated by quasielastic incoherent neutron scattering. Reorientational times vary from 65 _+ 20 ps at 260 K to 26 _+ 3 ps at 370 K, and the temperature dependence suggests an activation energy for reorientations of 780_+ 200 K. Measurements of the temperature dependence of the intensity of the elastic incoherent scattering indicate that there is no cooperative ordering at low temperatures, and that instead there is a gradual freezing-in of the motion of individual water molecules.

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