http://www.cnr.it/ontology/cnr/individuo/prodotto/ID22457
The Microscopic Dynamics of Liquid and Solid Parahydrogen (Articolo in rivista)
- Type
- Label
- The Microscopic Dynamics of Liquid and Solid Parahydrogen (Articolo in rivista) (literal)
- Anno
- 2002-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1023/A:1013775319720 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Celli M.; Colognesi D.; Zoppi M. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Consiglio Nazionale delle Ricerche, Istituto di Elettronica Quantistica, Firenze, Italy;
Consiglio Nazionale delle Ricerche, Gruppo Nazionale di Struttura della Materia, Roma, Italy;
Rutherford Appleton Laboratory, ISIS Neutron Facility, Chilton, Didcot, U.K. (literal)
- Titolo
- The Microscopic Dynamics of Liquid and Solid Parahydrogen (literal)
- Abstract
- We have measured the almost-pure incoherent scattering function of liquid
and solid parahydrogen, using inelastic neutron scattering. The experiment
was carried out on TOSCA, a time-of-flight, inverse-geometry,
crystal-analyser spectrometer, operating on the pulsed neutron source ISIS
(UK). The measured double differential cross section gives a direct
experimental access to the microscopic dynamics of condensed hydrogen.
From the high energy region of the spectrum, where the Impulse
Approximation for the center of mass motion applies, we have been able to
extract the translational mean kinetic energy, which turns out to be
density dependent.
The density behaviors of the liquid and solid mean kinetic energy are
slightly different. In the low energy region we used the Gaussian
approximation to compare, in the liquid phase, the results of a novel
quantum simulation calculation with the experimental data. Results are
encouraging, but suggest further work, possibly beyond the Gaussian
approximation. (literal)
- Prodotto di
- Autore CNR
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