The Role of Momentum Partitioning in Covariance Ion Imaging Analysis
Year: 2024
Type: article
Abstract: We present results from a covariance ion imaging study, which employs extensive filtering, on the relationship between fragment momenta to gain deeper insight into photofragmentation dynamics. A new data analysis approach is introduced that considers the momentum partitioning between the fragments of the breakup of a molecular polycation to disentangle concurrent fragmentation channels, which yield the same ion species. We exploit this approach to examine the momentum exchange relationship between the products, which provides direct insight into the dynamics of molecular fragmentation. We apply these techniques to extensively characterize the dissociation of 1-iodopropane and 2-iodopropane dications prepared by site-selective ionization of the iodine atom using extreme ultraviolet intense femtosecond laser pulses with a photon energy of 95 eV. Our assignments are supported by classical simulations, using parameters largely obtained directly from the experimental data.
Authors: Tiffany Walmsley, Joseph W. McManus, Yoshiaki Kumagai, Kiyonobu Nagaya, James Harries, Hiroshi Iwayama, Michael N. R. Ashfold, Mathew Britton, Philip H. Bucksbaum, Briony Downes-Ward, Taran Driver, David Heathcote, Paul Hockett, Andrew J. Howard, Jason W. L. Lee, Yusong Liu, Edwin Kukk, Dennis Milesevic, Russell S. Minns, Akinobu Niozu, Johannes Niskanen, Andrew J. Orr-Ewing, Shigeki Owada, Patrick A. Robertson, Daniel Rolles, Artem Rudenko, Kiyoshi Ueda, James Unwin, Claire Vallance, Mark Brouard, Michael Burt, Felix Allum, Ruaridh Forbes
Institutions: University of Oxford, Tokyo University of Agriculture and Technology, Kyoto University, SPring-8, National Institutes for Quantum Science and Technology, The Graduate University for Advanced Studies, SOKENDAI, Institute for Molecular Science, University of Bristol, SLAC National Accelerator Laboratory, Linac Coherent Light Source, University of Southampton, National Research Council Canada, Deutsches Elektronen-Synchrotron DESY, University of Turku, Hiroshima University, Japan Synchrotron Radiation Research Institute, Kansas State University, Tohoku University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funders: National Science Foundation, U.S. Department of Energy, UK Research and Innovation, Leverhulme Trust, University of Southampton, Helmholtz-Gemeinschaft, Academy of Finland, Office of Science, Engineering and Physical Sciences Research Council, Jesus College, University of Cambridge, Jesus College, University of Oxford, Japan Society for the Promotion of Science, Basic Energy Sciences, H2020 European Research Council, SLAC National Accelerator Laboratory
Awards: G1160814513, G1229526393, G1286251239, G150693064, G222768804, G2369733483, G2371548206, G262532246, Ultrafast Photochemical Dynamics in Complex Environments, STRUCTURE AND DYNAMICS OF ATOMS, IONS, MOLECULES AND SURFACES, G303061748, G333714909, Cooperative hydration effects for the transfer efficiency of the excitation energy in a metalloporphyrin polymer, G3826261775, G4235786860, G4264918310, G4654690619, G495301720, G498139845, G5368910837, Imaging Chemical Dynamics with Ultrafast Laser Spectroscopy, G5486038727, G5570207115, G5648016710, Photoelectron interferometry as a structural and dynamical probe, G5996689310, G6033966476, G6550344761, ATOMIC PHYSICS WITH HIGHLY CHARGED IONS, ATOMIC PHYSICS WITH HIGHLY CHARGED IONS, G7283024673, Statistical Interpretation of Core-Hole Transitions, G7477609459, G8382000481, G911061179, G969889393, STRUCTURE AND DYNAMICS OF ATOMS, IONS, MOLECULES AND SURFACES
OpenAlex ID: W4396692992