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Femtosecond molecular dynamics viewed by multi-model imaging

  • Yusong Liu
  • , Jie Yang
  • , J. Pedro F. Nunes
  • , Ruaridh Forbes
  • , Thoams J.A. Wolf
  • , Xiaozhe Shen
  • , Chuan Cheng
  • , Ming Fu Lin
  • , Kareem Hegazy
  • , Paul Hockett
  • , Albert Stolow
  • , Martin Centurion
  • , Tamás Rozgonyi
  • , Philipp Marquetand
  • , Xijie Wang
  • , Thomas Weinacht
  • Stony Brook University
  • SLAC National Accelerator Laboratory
  • University of Nebraska-Lincoln
  • Stanford University
  • National Research Council of Canada
  • University of Ottawa
  • Hungarian Academy of Sciences
  • University of Vienna

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Following the coupled motion of electrons and nuclei in molecules is dificult if one uses time-resolved approaches that only provide direct information on one or the other. We combine two complementary measurements, Time-Resolved Photoelectron/PhotoIon Spectroscopy (TRPES and TRPIS) and Ultrafast Electron Diffraction, to follow the electronic and nuclear dynamics of gas phase CH2I2 when exposed to UV light. In order to interpret the measurement, trajectory surface hopping calculations are carried out and all the measurement observables are simulated and directly compared with the measurement signals. Our measurements highlight the coupled electron-nucleus dynamics that allow for electronic potential energy to be converted into nuclear kinetic energy as well as complicated structural rearrangements of the molecule that involve symmetry breaking, dissociation, rotation, and non-local wave-packet dynamics.

Original languageEnglish
Title of host publicationUltrafast Nonlinear Imaging and Spectroscopy IX
EditorsZhiwen Liu, Demetri Psaltis, Kebin Shi
PublisherSPIE
ISBN (Electronic)9781510644885
DOIs
StatePublished - 2021
EventUltrafast Nonlinear Imaging and Spectroscopy IX 2021 - San Diego, United States
Duration: Aug 1 2021Aug 5 2021

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11825
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceUltrafast Nonlinear Imaging and Spectroscopy IX 2021
Country/TerritoryUnited States
CitySan Diego
Period08/1/2108/5/21

Keywords

  • Excited state dynamics
  • Momentum-resolved photoion spectroscopy
  • Photoelectron spectroscopy
  • Ultrafast electron diffraction Further author information

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