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Evidence of the presence of opticlike collective modes in a liquid from neutron scattering experiments.

Abstract:

Inelastic neutron scattering data from liquid DF close to the melting point show, in addition to spectra comprising quasielastic and heavily damped acoustic motions, an intense, nondispersive band centered at about 27 meV along with a broader higher energy feature. Observation of the former band provides the first direct verification of the existence within the liquid state of collective opticlike excitations as predicted by molecular dynamics simulations. The latter corresponds to mainly reo...

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Publication status:
Published

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Authors


Bermejo, FJ More by this author
Taylor, JW More by this author
McLain, SE More by this author
Bustinduy, I More by this author
Turner, JF More by this author
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Journal:
Physical review letters
Volume:
96
Issue:
23
Pages:
235501
Publication date:
2006-06-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:99914bfd-7400-4c05-999e-b660321856a8
Source identifiers:
196827
Local pid:
pubs:196827
Language:
English

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