caa a22 4500 465755321 CHVBK 20180323111845.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00503857 doi (NATIONALLICENCE)springer-10.1007/BF00503857 Direct observation of critical fluctuations in a binary mixture [Elektronische Daten] [D. Beysens, P. Guenoun, F. Perrot] Microscopic observations of concentration fluctuations in the range 1-500 μm have been performed in a number of binary fluids near their critical temperature (T c). A heterodyne technique has been used. The temperature range (T-T c = 1-25 mK) is such that the sizes of the fluctuations are larger than or equal to the correlation length, measured usually as the inverse half-width of the structure factor of the fluctuations. Image analysis has given some information about the free energy of the system determined from the intensity distribution function. Also, the shape of the fluctuations can be studied. These are self-similar over more than three decades, with a fractal dimension of D f = 2.8. This value is compared with a number of theoretical predictions. Plenum Publishing Corporation, 1990 concentration fluctuations nationallicence critical phenomena nationallicence fractal dimensionality nationallicence liquid mixtures nationallicence percolation nationallicence Beysens D. Service de Physique du Solide et de Résonance Magnétique, CEA-CEN Saclay, 91191, Gif-sur-Yvette Cedex, France aut Guenoun P. Service de Physique du Solide et de Résonance Magnétique, CEA-CEN Saclay, 91191, Gif-sur-Yvette Cedex, France aut Perrot F. Service de Physique du Solide et de Résonance Magnétique, CEA-CEN Saclay, 91191, Gif-sur-Yvette Cedex, France aut International Journal of Thermophysics Kluwer Academic Publishers-Plenum Publishers 11/1(1990-01-01), 37-48 0195-928X 11:1<37 1990 11 10765 https://doi.org/10.1007/BF00503857 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00503857 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Beysens D. Service de Physique du Solide et de Résonance Magnétique, CEA-CEN Saclay, 91191, Gif-sur-Yvette Cedex, France aut NATIONALLICENCE 700 1- Guenoun P. Service de Physique du Solide et de Résonance Magnétique, CEA-CEN Saclay, 91191, Gif-sur-Yvette Cedex, France aut NATIONALLICENCE 700 1- Perrot F. Service de Physique du Solide et de Résonance Magnétique, CEA-CEN Saclay, 91191, Gif-sur-Yvette Cedex, France aut NATIONALLICENCE 773 0- International Journal of Thermophysics Kluwer Academic Publishers-Plenum Publishers 11/1(1990-01-01), 37-48 0195-928X 11:1<37 1990 11 10765 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer