期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 6, 期 15, 页码 2944-2949出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.5b01205
关键词
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类别
资金
- program review committee [2012B8045]
- X-ray Free Electron Laser Utilization Research Project
- X-ray Free Electron Laser Priority Strategy Program of the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT)
- Japan Society for the Promotion of Science (JSPS) [21244062, 23241033]
- MEXT [22740264]
- Proposal Program of SACLA Experimental Instruments of RIKEN
- Academy of Finland
- Cooperative Research Program of the Network Joint Research Center for Materials and Devices of MEXT
- Chemical Sciences, Geosciences, and Biosciences Division of the Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy
- CNRS program PEPS SASELELX
- European Cooperation in Science and Technology (COST) action - XUV/x-ray light and fast ions for ultrafast chemistry (XLIC) [CM1204]
- JSPS
- National Basic Research Program of China [2013CB922200]
- NSFC [11274232, 11420101003]
- Shanghai Pujiang Program [13PJ1407500]
- Global Research Laboratory Program [2009-0439]
- Max Planck POSTECH/KOREA Research Initiative Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [2011-0031558]
- Grants-in-Aid for Scientific Research [15H02119, 26390019, 22740264, 23241033, 15K17722] Funding Source: KAKEN
In recent years, free-electron lasers operating in the true X-ray regime have opened up access to the femtosecond-scale dynamics induced by deep inner-shell ionization. We have investigated charge creation and transfer dynamics in the context of molecular Coulomb explosion of a single molecule, exposed to sequential deep inner-shell ionization within an ultrashort (10 fs) X-ray pulse. The target molecule was CH3I, methane sensitized to X-rays by halogenization with a heavy element, iodine. Time-of-flight ion spectroscopy and coincident ion analysis was employed to investigate, via the properties of the atomic fragments, single-molecule charge states of up to +22. Experimental findings have been compared with a parametric model of simultaneous Coulomb explosion and charge transfer in the molecule. The study demonstrates that including realistic charge dynamics is imperative when molecular Coulomb explosion experiments using short-pulse facilities are performed.
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