Seminars Archive

Local ordering in liquids under extreme conditions

Abstract
Recent advances in data-analysis and instrumentation allowed us to perform x-ray absorption (XAS) studies of liquids, undercooled liquids and glasses under high-temperature and/or high-pressure conditions. The experimental set-up used for combined XAS and x-ray diffraction synchrotron radiation experiments at the ESRF will be briefly presented as well as equipments allowing preparatory experiments in our home laboratory. Advances in XAS data-analysis allowing detailed structural insight about pair and higher-order distributions will be also mentioned. Some recent applications to liquid and undercooled liquid metals like Cu[1] and Sn will be presented. [1] A. Di Cicco, A. Trapananti, S. Faggioni, and A. Filipponi, Phys. Rev. Letters 91, 135505-1 - 135505-4 (2003). See also Phys. Rev. Focus 12, story 10.