Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 149, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5041381
Keywords
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Funding
- Max Planck Society
- BMBF from FSP-302 [05K10KT2, 05K13KT2, 05K16KT3, 05K10KTB]
- UK EPSRC [EP/G00224X/1, EP/L005913/1]
- EU (FP7 ITN ICONIC) [238671]
- STFC [ST/J002895/1]
- Magdalen College, Oxford
- Chemical Sciences, Geosciences, and Biosciences Division, Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy [DE-FG02-86ER13491]
- Helmholtz Gemeinschaft through the Helmholtz Young Investigator Program
- German Research Council (DFG)
- CRC755 [B03]
- CRC 1073 [C02]
- excellence cluster The Hamburg Center for Ultrafast Imaging-Structure, Dynamics and Control of Matter at the Atomic Scale of the Deutsche Forschungsgemeinschaft (CUI) [DFG-EXC1074]
- European Research Council under the European Union's Seventh Framework Programme through the Consolidator Grant COMOTION [FP7/2007-2013, ERC-Kupper-614507]
- Helmholtz Association
- DFG [CRC 755/B03]
- EU via the MEDEA project within the Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant [641789]
- German Federal Foreign Office via the German Academic Exchange Service (DAAD) [C-2015a-6, C-2015b-6, C-2016b-7]
- French Agence Nationale de la Recherche (ANR) through the ATTOMEMUCHO project [ANR-16-CE30-0001]
- Deutsche Forschungsgemeinschaft (DFG) [RO 4577/1-1]
- CNRS
- EPSRC [EP/L005913/1, EP/G00224X/1, 1947245] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/L005913/1] Funding Source: researchfish
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The photodissociation dynamics of CH3I and CH2CII at 272 nm were investigated by time-resolved Coulomb explosion imaging, with an intense non-resonant 815nmprobe pulse. Fragment ion momenta over a widem/z range were recorded simultaneously by coupling a velocity map imaging spectrometer with a pixel imaging mass spectrometry camera. For both molecules, delay-dependent pump-probe features were assigned to ultraviolet-induced carbon-iodine bond cleavage followed by Coulomb explosion. Multi-mass imaging also allowed the sequential cleavage of both carbon-halogen bonds in CH2ClI to be investigated. Furthermore, delay-dependent relative fragment momenta of a pair of ions were directly determined using recoil-frame covariance analysis. These results are complementary to conventional velocity map imaging experiments and demonstrate the application of time-resolved Coulomb explosion imaging to photoinduced real-time molecular motion. Published by AIP Publishing.
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