Neutron study of dynamics of solid hydrogen under pressure

The phonon density of states g( ε) of solid parahydrogen is determined from the inelastic incoherent neutron scattering and total cross-section versus energy measurements at pressures up to 1.06 GPa. The very anharmonic phonon spectra with long “tails” and integral parameters versus density were obt...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 1997-06, Vol.234, p.30-31
Main Authors: Ishmaev, S.N., Kobelev, G.V., Sadikov, I.P., Sukhoparov, V.A., Chernyshov, A.A., Telepnev, A.S., Vindryaevskii, B.A., Shitikov, Y.L.
Format: Article
Language:English
Subjects:
High pressure
Hydrogen
Phonon density of states
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Summary:The phonon density of states g( ε) of solid parahydrogen is determined from the inelastic incoherent neutron scattering and total cross-section versus energy measurements at pressures up to 1.06 GPa. The very anharmonic phonon spectra with long “tails” and integral parameters versus density were obtained. The role of zero-point vibrations in lattice dynamics of p-H 2 quantum crystal remains significant in the investigated region, over which its density is almost doubled.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(96)00867-8