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UID:69e00f1c961ea
DTSTAMP:20260415T182012
DTSTART:20140414T113000
SEQUENCE:0
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DTEND:20140414T123000
URL:https://murmitoyen.com/events/vanille/udem/detail/364628
LOCATION:Université de Montréal - Pavillon J.-Armand-Bombardier\, 5155\, 
 chemin de la rampe \, Montréal\, QC\, Canada\, H3T 2B2
SUMMARY:Using coherent x-rays to study disordered materials – Mark Sutton
 \, McGill
DESCRIPTION:Mark Sutton\, Departement of Physics\, McGill University\, Mo
 ntréal\, QC\, CanadaMany of the properties of a material depend more on t
 he dynamics of its microstructure than on its atomic structure. Photon co
 rrelation spectroscopy (PCS) is an ideal way to study temporal fluctuatio
 ns of this microstructure and by using laser light\, it has been used sin
 ce the late 1960s. These techniques has recently been extended to the x-r
 ay region (XPCS). This allows one to study opaque materials and more imp
 ortantly\, to probe much shorter length scales such as required to study 
 metal alloys. By the use of high resolution x-ray area detectors\, XPCS i
 s also being used to study systems with much longer time scales and to st
 udy fluctuations in non-equilibrium systems using two-time correlation fu
 nctions. We have also extended XPCS by using heterodyning which allows us
  to probe local flow as well as dissipation.This talk will describe XPCS u
 sing ideas from statistical mechanics and optics and will present several
  examples. It should be easily accessible to upper year undergraduates an
 d graduate students in physics.Site web du groupe du  Prof. SuttonCette c
 onférence est présentée par le RQMP Versant Nord du Département de ph
 ysique de l'Université de Montréal et le Département de génie physique
  de Polytechnique Montréal.
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