Peter Abbamonte
Brookhaven National Laboratory
Abstract:
Inelastic x-ray scattering (IXS) is an energy-loss
technique which can probe the dynamics of electrons and atoms in
condensed matter. In this talk I will present a solution to the phase
problem for IXS, which permits explicit imaging of disturbances in the
electron density of a medium. As an example I will show the density
disturbance due to a point source in liquid water, with a resolution of
41.3 attoseconds and 1.27 Angstrom. These images reveal dynamic Friedel
oscillations, among other things, and will be used to deduce the
screening cloud around a photoexcited chromophore in solution as well as
the wake generated by a swift ion. I will describe how to use such
techniques to study the electron-phonon interaction in solids and
solvation phenomena in liquids.
* In collaboration with K. D. Finkelstein, M. D. Collins, S. M. Gruner
2008 Run
Nov 19th - Dec 22nd
