Multi-channel photodissociation and XUV-induced charge transfer dynamics in strong-field-ionized methyl iodide studied with time-resolved recoil-frame covariance imaging
| Autor: | Johannes Niskanen, Kiyoshi Ueda, Jordan O'Neal, Joanne Woodhouse, Hiroshi Iwayama, Nicholas Werby, Claire Vallance, Leon Kaiser, Taran Driver, Felix Allum, Mark Brouard, Artem Rudenko, Michael Burt, Briony Downes-Ward, Farzaneh Ziaee, Russell S. Minns, XiaoJing Liu, James D. Pickering, Yudai Ishimura, Shu Saito, Daehyun You, Edwin Kukk, Shigeki Owada, Philip H. Bucksbaum, Akinobu Niozu, Kiyonobu Nagaya, Sven Grundmann, Daniel Rolles, James R. Harries, Jongmin Lee, Ruaridh Forbes, Nils Anders |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Photodissociation 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Ion SACLA chemistry.chemical_compound Fragmentation (mass spectrometry) chemistry Extreme ultraviolet Ionization 0103 physical sciences Physics::Atomic and Molecular Clusters Physical and Theoretical Chemistry Atomic physics 010306 general physics 0210 nano-technology Ultrashort pulse Methyl iodide |
| Zdroj: | Faraday discussions. 228 |
| ISSN: | 1364-5498 |
| Popis: | The photodissociation dynamics of strong-field ionized methyl iodide (\ce{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. |
| Databáze: | OpenAIRE |
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