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Title: Communication: XFAIMS—eXternal Field Ab Initio Multiple Spawning for electron-nuclear dynamics triggered by short laser pulses

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4967761· OSTI ID:1360172
 [1];  [2]; ORCiD logo [3]
  1. Univ. of Liege, Liege (Belgium)
  2. Univ. of Bristol, Bristol (United Kingdom)
  3. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)

Attoscience is an emerging field where attosecond pulses or few cycle IR pulses are used to pump and probe the correlated electron-nuclear motion of molecules. We present the trajectory-guided eXternal Field Ab Initio Multiple Spawning (XFAIMS) method that models such experiments “on-the-fly,” from laser pulse excitation to fragmentation or nonadiabatic relaxation to the ground electronic state. For the photoexcitation of the LiH molecule, we show that XFAIMS gives results in close agreement with numerically exact quantum dynamics simulations, both for atto- and femtosecond laser pulses. As a result, we then show the ability of XFAIMS to model the dynamics in polyatomic molecules by studying the effect of nuclear motion on the photoexcitation of a sulfine (H2CSO).

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515; 701355 (NAMDIA)
OSTI ID:
1360172
Alternate ID(s):
OSTI ID: 1332587
Journal Information:
Journal of Chemical Physics, Vol. 145, Issue 19; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 27 works
Citation information provided by
Web of Science

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Cited By (7)

Nonadiabatic dynamics: The SHARC approach
  • Mai, Sebastian; Marquetand, Philipp; González, Leticia
  • Wiley Interdisciplinary Reviews: Computational Molecular Science, Vol. 8, Issue 6 https://doi.org/10.1002/wcms.1370
journal May 2018
On the importance of initial conditions for excited-state dynamics journal January 2018
A walk through the approximations of ab initio multiple spawning journal April 2018
Steering the outcome of a photochemical reaction—An in silico experiment on the H 2 CSO sulfine using few-femtosecond dump pulses journal March 2019
Excited-state dynamics of molecules with classically driven trajectories and Gaussians journal September 2019
Excited-state dynamics of molecules with classically driven trajectories and Gaussians text January 2019
Excited-state dynamics of molecules with classically driven trajectories and Gaussians text January 2019

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