indico  First event Previous event Molecular Physics seminar Next event Last event   | view:  |  manage export to personal scheduler  | 
user login 


Ultrafast X-ray scattering as a probe of quantum dynamics
  Molecular Physics seminar

Tuesday 24 May 2016
from 10:00 to 11:00
at FB 54
Speaker : Adam Kirrander (University of Edingburgh)
Abstract : New x-ray free-electron lasers such as the LCLS and the XFEL provide ultrashort bursts of intense X-rays that can be used to study processes in matter with temporal and spatial resolution. One important goal is to follow the motion of atoms during photochemical reactions. Recently we recorded the first time-resolved ultrafast X-ray scattering signal for a benchmark gas-phase reaction, the electrocyclic ring-opening reaction of 1,3- cyclohexadiene, at the LCLS [1]. A key aspect of the data analysis and the interpretation of the experiments was accurate ab-initio quantum molecular dynamics simulations based on the multiconfigurational Ehrenfest method [2,3]. We will discuss the simulations used to analyse the experiments, but also the general theoretical framework for the analysis of ultrafast X-ray scattering experiments, including inelastic effects. Prospects for investigating electron dynamics and other non-stationary states will also be touched upon [4].

AlbaNova  | Last modified 15 April 2016 22:13  |  HELP