Photodissociation of aqueous observed with liquid-phase ultrafast mega-electron-volt electron diffraction
- Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States). Photon Ultrafast Laser Science and Engineering Inst. (PULSE)
- SLAC National Accelerator Lab., Menlo Park, CA (United States). Photon Ultrafast Laser Science and Engineering Inst. (PULSE)
- Univ. of Nebraska, Lincoln, NE (United States
- Univ. of Nebraska, Lincoln, NE (United States)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
Developing femtosecond resolution methods for directly observing structural dynamics is critical to understanding complex photochemical reaction mechanisms in solution. We have used two recent developments, ultrafast mega-electron-volt electron sources and vacuum compatible sub-micron thick liquid sheet jets, to enable liquid-phase ultrafast electron diffraction (LUED). We have demonstrated the viability of LUED by investigating the photodissociation of tri-iodide initiated with a 400 nm laser pulse. This has enabled the average speed of the bond expansion to be measured during the first 750 fs of dissociation and the geminate recombination to be directly captured on the picosecond time scale.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States). Linac Coherent Light Source (LCLS)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- Grant/Contract Number:
- AC02-76SF00515; SC0014170; AC02-05CH11231
- OSTI ID:
- 1728465
- Alternate ID(s):
- OSTI ID: 1749914; OSTI ID: 1749962
- Journal Information:
- Structural Dynamics, Vol. 7, Issue 6; ISSN 2329-7778
- Publisher:
- American Crystallographic Association/AIPCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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