skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Step-by-step state-selective tracking of fragmentation dynamics of water dications by momentum imaging

Journal Article · · Nature Communications

Abstract The double photoionization of a molecule by one photon ejects two electrons and typically creates an unstable dication. Observing the subsequent fragmentation products in coincidence can reveal a surprisingly detailed picture of the dynamics. Determining the time evolution and quantum mechanical states involved leads to deeper understanding of molecular dynamics. Here in a combined experimental and theoretical study, we unambiguously separate the sequential breakup via D +  + OD + intermediates, from other processes leading to the same D +  + D +  + O final products of double ionization of water by a single photon. Moreover, we experimentally identify, separate, and follow step by step, two pathways involving the b  1 Σ + and a 1 Δ electronic states of the intermediate OD + ion. Our classical trajectory calculations on the relevant potential energy surfaces reproduce well the measured data and, combined with the experiment, enable the determination of the internal energy and angular momentum distribution of the OD + intermediate.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS)
Grant/Contract Number:
AC02-05CH11231; FG02-86ER13491; SC0014664
OSTI ID:
1885176
Alternate ID(s):
OSTI ID: 1887205
Journal Information:
Nature Communications, Journal Name: Nature Communications Vol. 13 Journal Issue: 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (31)

The H2O2+ potential energy surfaces dissociating into H+/OH+: Theoretical analysis of the isotopic effect journal July 2009
Fragmentation dynamics of carbonyl sulfide in collision with 500 eV electron journal December 2016
Complete photo-fragmentation of the deuterium molecule journal September 2004
Transient absorption spectroscopy using high harmonic generation: a review of ultrafast X-ray dynamics in molecules and solids
  • Geneaux, Romain; Marroux, Hugo J. B.; Guggenmos, Alexander
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 377, Issue 2145 https://doi.org/10.1098/rsta.2017.0463
journal April 2019
Photoelectron and fragmentation dynamics of the H + + H + dissociative channel in NH 3 following direct single-photon double ionization journal October 2020
Molpro: a general-purpose quantum chemistry program package: Molpro
  • Werner, Hans-Joachim; Knowles, Peter J.; Knizia, Gerald
  • Wiley Interdisciplinary Reviews: Computational Molecular Science, Vol. 2, Issue 2 https://doi.org/10.1002/wcms.82
journal July 2011
Cold Target Recoil Ion Momentum Spectroscopy: a ‘momentum microscope’ to view atomic collision dynamics journal June 2000
Nonadiabatic Coupling Effects in the 800 nm Strong-Field Ionization-Induced Coulomb Explosion of Methyl Iodide Revealed by Multimass Velocity Map Imaging and Ab Initio Simulation Studies journal October 2021
Capturing roaming molecular fragments in real time journal November 2020
Dissociation dynamics of the water dication following one-photon double ionization. II. Experiment journal November 2018
Classical trajectory approach to photodissociation: The Wigner method journal July 1981
Coulomb Explosion Imaging for the Visualization of a Conical Intersection journal December 2018
Coulomb explosion imaging of CH 3 I and CH 2 ClI photodissociation dynamics journal November 2018
Sequential three-body Coulomb explosion of CS2 in intense laser fields appearing in momentum correlation map journal July 2002
Fragmentation Dynamics of CO 2 3 + Investigated by Multiple Electron Capture in Collisions with Slow Highly Charged Ions journal March 2010
Native Frames: Disentangling Sequential from Concerted Three-Body Fragmentation journal March 2018
Test of the Wigner method for the photodissociation of symmetric triatomic molecules journal June 1987
Coulomb imaging of the concerted and stepwise break up processes of OCS ions in intense femtosecond laser radiation journal August 2014
On the limits of observing motion in time-resolved X-ray scattering
  • Ware, Matthew R.; Glownia, James M.; Natan, Adi
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 377, Issue 2145 https://doi.org/10.1098/rsta.2017.0477
journal April 2019
Recoil-ion and electron momentum spectroscopy: reaction-microscopes journal August 2003
The measurement of ultrafast electronic and structural dynamics with X-rays journal April 2019
Recoil-ion momentum spectroscopy journal July 1997
Ultrafast Dissociation of Metastable CO 2 + in a Dimer journal April 2017
Dissociation dynamics of the water dication following one-photon double ionization. I. Theory journal November 2018
Isomer-dependent fragmentation dynamics of inner-shell photoionized difluoroiodobenzene journal January 2017
Semiclassical Wigner theory of photodissociation in three dimensions: Shedding light on its basis journal April 2015
Coulomb Explosion Dynamics of Chlorocarbonylsulfenyl Chloride journal June 2021
Nonsequential and Sequential Fragmentation of CO 2 3 + in Intense Laser Fields journal March 2013
Spin-forbidden transitions in the presence of an intersystem crossing: application to the b1Σ+ state in OH+ journal March 1987
The Role of Excited-State Topology in Three-Body Dissociation of sym-Triazine journal August 2008
Selecting core-hole localization or delocalization in CS2 by photofragmentation dynamics journal January 2015