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Translation-rotation coupling in transient grating experiments: Theoretical and experimental evidences

Taschin, A ; Torre, R ; Ricci, M ; Sampoli, M ; Dreyfus, C ; Pick, R. M

Europhysics letters, 2001-11, Vol.56 (3), p.407-413 [Periódico revisado por pares]

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Título:
Translation-rotation coupling in transient grating experiments: Theoretical and experimental evidences
Autor: Taschin, A ; Torre, R ; Ricci, M ; Sampoli, M ; Dreyfus, C ; Pick, R. M
Assuntos: 64.70.Pf ; 78.47.+p ; Condensed matter: structure, mechanical and thermal properties ; Equations of state, phase equilibria, and phase transitions ; Exact sciences and technology ; Glass transitions ; Physics ; Specific phase transitions
É parte de: Europhysics letters, 2001-11, Vol.56 (3), p.407-413
Notas: istex:C9AE25CB6B9A7911D6FDD80AECE85DEF0F723EE5
ark:/67375/80W-VGLQR991-L
publisher-ID:6787
Descrição: The results of a Transient Grating experiment in a supercooled molecular liquid of anisotropic molecules and its theoretical interpretation are presented. These results show the existence of two distinct dynamical contributions in the response function of this experiment, density and orientation dynamics. These dynamics can be experimentally disentangled by varying the polarisation of the probe and diffracted beams and they have been identified and measured in a Heterodyne Detected experiment performed on m-toluidine. The results of the theory show a good qualitative agreement with the measurements at all temperatures.
Editor: Les Ulis: IOP Publishing
Idioma: Inglês

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