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

被引：31

作者：

Taschin, A

Torre, R

Ricci, M

Sampoli, M

Dreyfus, C

Pick, RM

机构：

[1] Univ Florence, LENS, I-50125 Florence, Italy

[2] Univ Florence, Dipartimento Fis, I-50125 Florence, Italy

[3] INFM, Unita Firenze, I-50125 Florence, Italy

[4] Univ Basilicata, Dipartimento Chim Fis, I-85100 Potenza, Italy

[5] Univ Florence, Dipartimento Energet, I-50125 Florence, Italy

[6] Univ Paris 06, PMC, UMR 7602, F-75005 Paris, France

[7] Univ Paris 06, LMDH, UMR 7603, F-75005 Paris, France

来源：

EUROPHYSICS LETTERS | 2001年 / 56卷 / 03期

关键词：

D O I：

10.1209/epl/i2001-00533-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：407 / 413

页数：7

共 12 条

[1] Light scattering study of the liquid-glass transition of meta-toluidine [J].