Multi-channel photodissociation and XUV-induced charge transfer dynamics in strong-field-ionized methyl iodide studied with time-resolved recoil-frame covariance imaging
Year: 2020
Type: article
Abstract: The photodissociation dynamics of strong-field ionized methyl iodide (CH3I) were probed using intense extreme ultraviolet (XUV) radiation produced by the SPring-8 Angstrom Compact free electron LAser (SACLA). Strong-field ionization and subsequent fragmentation of CH3I was initiated by an intense femtosecond infrared (IR) pulse. The ensuing fragmentation and charge transfer processes following multiple ionization by the XUV pulse at a range of pump-probe delays were followed in a multi-mass ion velocity-map imaging (VMI) experiment. Simultaneous imaging of a wide range of resultant ions allowed for additional insight into the complex dynamics by elucidating correlations between the momenta of different fragment ions using time-resolved recoil-frame covariance imaging analysis. The comprehensive picture of the photodynamics that can be extracted provides promising evidence that the techniques described here could be applied to study ultrafast photochemistry in a range of molecular systems at high count rates using state-of-the-art advanced light sources.
Source: Faraday Discussions
DOI: 10.1039/d0fd00115e
Authors: Felix Allum, Nils Anders, Mark Brouard, Philip Bucksbaum, Michael Burt, Briony Downes-Ward, Sven Grundmann, James Harries, Yudai Ishimura, Hiroshi Iwayama, Leon Kaiser, Edwin Kukk, Jason Lee, Xiaojing Liu, Russell S. Minns, Kiyonobu Nagaya, Akinobu Niozu, Johannes Niskanen, Jordan O’Neal, Shigeki Owada, James Pickering, Daniel Rolles, Artem Rudenko, Shu Saito, Kiyoshi Ueda, Claire Vallance, Nicholas Werby, Joanne Woodhouse, Daehyun You, Farzaneh Ziaee, Taran Driver, Ruaridh Forbes
Institutions: University of Oxford, Goethe University Frankfurt, Max Planck Institute for Nuclear Physics, SLAC National Accelerator Laboratory, Stanford University, University of Southampton, SPring-8, National Institutes for Quantum Science and Technology, Spring-8 (Japan), Tohoku University, Institute for Molecular Science, University of Turku, Deutsches Elektronen-Synchrotron DESY, ShanghaiTech University, Kyoto University, RIKEN, Kansas State University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: U.S. Department of Energy, Magdalen College, University of Oxford, University of Southampton, Ministry of Education, Culture, Sports, Science and Technology, Tohoku University, Office of Science, Engineering and Physical Sciences Research Council, Science and Technology Facilities Council, Japan Society for the Promotion of Science, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division, Central Laser Facility, Science and Technology Facilities Council
Awards: Interatomic coulombic decay and its cascade in the many excited atoms, G1815137805, Chemical Applications of Velocity and Spatial Imaging, G2197341383, G222768804, G2369733483, STRUCTURE AND DYNAMICS OF ATOMS, IONS, MOLECULES AND SURFACES, G333714909, G3826261775, Time-resolved spectroscopy on photo-dissociative molecules using short-wavelength free-electron lasers, INVESTIGATING CHARGE TRANSFER AND CHARGE MIGRATION ON THE FEW- TO SUB-FEMTOSECOND TIME SCALE, Ｘ線自由電子レーザーによるナノクラスター回折実験：非平衡核生成ダイナミクスの解明, G4915310458, G5368910837, Imaging Chemical Dynamics with Ultrafast Laser Spectroscopy, G5648016710, Medium range structure studied by X-ray free electron laser, Photoelectron interferometry as a structural and dynamical probe, G6033966476, G6315639276, ATOMIC PHYSICS WITH HIGHLY CHARGED IONS, Improvement of sensitivity of T2K experiment aiming for future CP violation measurement, G7477609459, Angle-resolved photoelectron spectroscopy by EUV-FEL, G786475436, G8395316192, STRUCTURE AND DYNAMICS OF ATOMS, IONS, MOLECULES AND SURFACES
OpenAlex ID: W3105963109