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Evidence for the coexistence of two density fluctuation modes in molten Li(30)Bi(70) as probed by neutron scattering (Articolo in rivista)
- Type
- Label
- Evidence for the coexistence of two density fluctuation modes in molten Li(30)Bi(70) as probed by neutron scattering (Articolo in rivista) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1209/0295-5075/79/16002 (literal)
- Alternative label
L. E. Bove (1); F. Formisano (2); E. Guarini (3,4); A. Ivanov (5); C. Petrillo (4,6); F. Sacchetti (4,6) (2007)
Evidence for the coexistence of two density fluctuation modes in molten Li(30)Bi(70) as probed by neutron scattering
in Europhysics letters (Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- L. E. Bove (1); F. Formisano (2); E. Guarini (3,4); A. Ivanov (5); C. Petrillo (4,6); F. Sacchetti (4,6) (literal)
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- ISI Web of Science (WOS) (literal)
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- 1. Univ Paris 06, CNRS, Dept Phys, Milieux Denses IMPMC, F-75015 Paris, France
2. CNR-INFM CRS-Softt, c/o Inst Laue Langevin, F-38042 Grenoble, France
3. Univ Florence, Dipartimento Fis, I-50019 Sesto Fiorentino, Italy
4. INFM, CNR, CRS Soft, Rome, Italy
5. Inst Laue Langevin, F-38042 Grenoble, France
6. Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy (literal)
- Titolo
- Evidence for the coexistence of two density fluctuation modes in molten Li(30)Bi(70) as probed by neutron scattering (literal)
- Abstract
- We report on a novel simultaneous observation of two inelastic doublets in the dynamic structure factor of the liquid alloy Li(30)Bi(70). This result establishes the coexistence of two density fluctuation modes in a liquid binary system with disparate mass components. The measurements of the dynamic structure factor of the alloy have been performed on the hot neutron three-axis spectrometer IN1 of the Institut Laue-Langevin with an unprecedented energy resolution in the small wave vector domain. Analysis of the dynamical parameters characterizing the two excitations reveals the acoustic nature of the low-frequency mode and suggests an optic-like nature for the high-frequency mode. A comparison with recent neutron scattering results on pure liquid Bi suggests that the low-frequency mode in the alloy is closely related to the heavier component dynamics. (literal)
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