We report on the study of the slow dynamics of supercooled and molten Selenium by means of dynamic light scattering. To achieve this in the present case, where the opaqueness of Se prevents visible light scattering measurements, we have developed a novel experimental setup using infrared radiation as the light source. By measuring the scattered intensity autocorrelation function we have been able to extract the average size of the Se clusters in the liquid state and determine the temperature dependence of the related diffusion coefficient which was found to exhibit Arrhenius behavior. (C) 2009 Elsevier B.V. All rights reserved.
Slow dynamics of liquid Se studied by Infrared Photon Correlation Spectroscopy / S., Cazzato; Scopigno, Tullio; S. N., Yannopoulos; Ruocco, Giancarlo. - In: JOURNAL OF NON-CRYSTALLINE SOLIDS. - ISSN 0022-3093. - 355:37-42(2009), pp. 1797-1800. (Intervento presentato al convegno International Symposium on Non-Oxide and New Optical Glasses tenutosi a Montpellier, FRANCE nel APR 20-25, 2008) [10.1016/j.jnoncrysol.2009.06.041].
Slow dynamics of liquid Se studied by Infrared Photon Correlation Spectroscopy
SCOPIGNO, TULLIO;RUOCCO, Giancarlo
2009
Abstract
We report on the study of the slow dynamics of supercooled and molten Selenium by means of dynamic light scattering. To achieve this in the present case, where the opaqueness of Se prevents visible light scattering measurements, we have developed a novel experimental setup using infrared radiation as the light source. By measuring the scattered intensity autocorrelation function we have been able to extract the average size of the Se clusters in the liquid state and determine the temperature dependence of the related diffusion coefficient which was found to exhibit Arrhenius behavior. (C) 2009 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.