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Titolo:
Microscopic dynamics of liquid hydrogen
Autore:
Zoppi, M; Colognesi, D; Celli, M;
Indirizzi:
CNR, Ist Elettron Quantist, I-50127 Florence, Italy CNR Florence Italy I-50127 st Elettron Quantist, I-50127 Florence, Italy CNR, Grp Nazl Strutt Mat, I-00185 Rome, Italy CNR Rome Italy I-00185CNR, Grp Nazl Strutt Mat, I-00185 Rome, Italy Rutherford Appleton Lab, ISIS Neutron Facil, Didcot OX11 0QX, Oxon, England Rutherford Appleton Lab Didcot Oxon England OX11 0QX 1 0QX, Oxon, England
Titolo Testata:
EUROPHYSICS LETTERS
fascicolo: 1, volume: 53, anno: 2001,
pagine: 34 - 39
SICI:
0295-5075(200101)53:1<34:MDOLH>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
INELASTIC NEUTRON-SCATTERING; CENTROID MOLECULAR-DYNAMICS; PARAHYDROGEN; DENSITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Zoppi, M CNR, Ist Elettron Quantist, Via Panciatichi 56-30, I-50127 Florence, Italy CNR Via Panciatichi 56-30 Florence Italy I-50127 Florence, Italy
Citazione:
M. Zoppi et al., "Microscopic dynamics of liquid hydrogen", EUROPH LETT, 53(1), 2001, pp. 34-39

Abstract

We have measured the almost-pure incoherent scattering function of liquid parahydrogen using neutron inelastic scattering. The experiment was carriedout on TOSCA, a time-of-flight, inverse geometry, crystal analyser spectrometer, operating on the pulsed-neutron source ISIS (UK). Since the instrument kinematic region is close to a line in the (k, E)-plane, we have actually measured the projection of S-inc(k, w) on this line. The measured cross-section gives a direct experimental access to the microscopic dynamic of thecentre-of-mass motion of molecular hydrogen. The data have been analysed using the Gaussian approximation and have been compared with the results of a novel Quantum Mechanical Molecular Dynamics simulation technique. The results are encouraging, but claim for further developments of the theoreticalapproach, as well as for more extensive experimental data.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 11:35:37