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Determination of acoustic velocities in xenon and methane hydrates by Brillouin Spectroscopy
Author(s) -
Whiffen B. L.,
Kiefte H.,
Clouter M. J.
Publication year - 1982
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl009i006p00645
Subject(s) - brillouin spectroscopy , xenon , methane , hydrate , spectroscopy , brillouin zone , clathrate hydrate , materials science , brillouin scattering , crystallite , mineralogy , analytical chemistry (journal) , optics , chemistry , physics , atomic physics , laser , environmental chemistry , organic chemistry , quantum mechanics , metallurgy
The technique of Brillouin spectroscopy has, for the first time, been used to determine the longitudinal sound velocities in pure methane hydrate and xenon hydrate. The samples were artificially grown and polycrystalline. The velocity in methane hydrate, which on theoretical grounds is relatively independent of the degree of cage occupancy, was determined experimentally to be approximately 0.88 that of ice.