Year: 2018
Type: article
Abstract: The photodissociation dynamics of CH3I and CH2ClI at 272 nm were investigated by time-resolved Coulomb explosion imaging, with an intense non-resonant 815 nm probe pulse. Fragment ion momenta over a wide m/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.
Source: The Journal of Chemical Physics
DOI: 10.1063/1.5041381
Authors: Felix Allum, Michael Burt, Kasra Amini, Rebecca Boll, Hansjochen Köckert, Pavel K. Olshin, Sadia Bari, Cédric Bomme, Felix Brauße, Barbara Cunha de Miranda, Stefan Düsterer, Benjamin Erk, Marie Géléoc, Romain Geneaux, Alexander S. Gentleman, Gildas Goldsztejn, Renaud Guillemin, David M. P. Holland, Iyas Ismail, Per Johnsson, Loïc Journel, Jochen Küpper, Jan Lahl, Jason W. L. Lee, Sylvain Maclot, Stuart R. Mackenzie, Bastian Manschwetus, Andrey S. Mereshchenko, Robert Mason, Jérôme Palaudoux, Maria Novella Piancastelli, Francis Penent, Dimitrios Rompotis, Arnaud Rouzée, Thierry Ruchon, Artem Rudenko, Evgeny Savelyev, Marc Simon, Nora Schirmel, Henrik Stapelfeldt, Simone Techert, Oksana Travnikova, Sebastian Trippel, Jonathan G. Underwood, Claire Vallance, Joss Wiese, Farzaneh Ziaee, Mark Brouard, Tatiana Marchenko, Daniel Rolles
Institutions: University of Oxford, Deutsches Elektronen-Synchrotron DESY, St Petersburg University, Max-Born-Institute for Nonlinear Optics and Short Pulse Spectroscopy, Centre National de la Recherche Scientifique, Sorbonne Université, Laboratoire de Chimie Physique - Matière et Rayonnement, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Université Paris-Saclay, CEA Paris-Saclay - Etablissement de Saclay, CEA Paris-Saclay, Laboratoire Interactions, Dynamiques et Lasers, Daresbury Laboratory, Lund University, Universität Hamburg, Center for Free-Electron Laser Science, Hamburg Centre for Ultrafast Imaging, Uppsala University, European X-Ray Free-Electron Laser, Kansas State University, Aarhus University, Max Planck Institute for Biophysical Chemistry, University of Göttingen, University College London
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funders: U.S. Department of Energy, German-Russian Interdisciplinary Science Center, Magdalen College, University of Oxford, European Commission, Deutscher Akademischer Austauschdienst, Helmholtz-Gemeinschaft, Deutsche Forschungsgemeinschaft, Agence Nationale de la Recherche, Stiftelsen för Strategisk Forskning, Bundesministerium für Bildung und Forschung, Max-Planck-Gesellschaft, Vetenskapsrådet, Centre National de la Recherche Scientifique, Sorbonne Université, Office of Science, Engineering and Physical Sciences Research Council, Science and Technology Facilities Council, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division, H2020 Marie Skłodowska-Curie Actions, FP7 Ideas: European Research Council
Awards: G1077140421, Rapid, Parallel Imaging in Surface Chemistry and Biochemistry, New Horizons in Chemical and Photochemical Dynamics, G1227308231, G1307938796, G1434468791, G1797787269, G1803495163, G1815137805, G1883359985, G1893551499, G1926397799, Chemical Applications of Velocity and Spatial Imaging, G2109279595, G222768804, G2407759970, STRUCTURE AND DYNAMICS OF ATOMS, IONS, MOLECULES AND SURFACES, G2978581158, G3207356259, G333714909, G3467815775, Molecular Electron Dynamics investigated by IntensE Fields and Attosecond Pulses, G3530777102, G3696053436, Velocity Map Imaging of Ultrafast Molecular Dynamics Using Coulomb Explosion Imaging, G3770966485, G3826261775, G392462602, G393177772, G4336652674, G434337789, Verbundprojekt: FSP 301 - FLASH: Nanoskopische Systeme. Teilprojekt 1.1: Universelle Experimentierkammer für Streuexperimente mit kohärenten Femtosekunden-Röntgenpulsen Multi Purpose Coherent Scattering Chamber for FLASH and XFEL 'MPscatt'., G4760961572, G4818080411, Molecular Electron Dynamics investigated by IntensE Fields and Attosecond Pulses, Verbundprojekt FSP 302 - Freie-Elektronen-Laser: Nanoskopische Systeme. Teilprojekt 4: Dynamik einzelner Nanoteilchen in Femtosekunden-Zeitlupe - Filmen mit ultrakurzen Röntgen-Doppelpulsen., G5075395082, G5420063140, G5504698101, G5577635371, G5648016710, G5667547466, G5702163051, G5878972985, G6120638290, G653377506, ATOMIC PHYSICS WITH HIGHLY CHARGED IONS, G685849346, G6970970346, ATOMIC PHYSICS WITH HIGHLY CHARGED IONS, G7272836866, Imaging and CONtrol In Chemistry - ICONIC, Verbundprojekt: FSP 301 - FLASH: Nanoskopische Systeme. Teilprojekt 1.2: Universelle Experimentierkammer für Streuexperimente mit kohärenten Femtosekunden-Röntgenpulsen Multi Purpose Coherent Scattering Chamber for FLASH and XFEL 'MPscatt'., G786475436, G8044206612, ATTOSECOND ELECTRON DYNAMICS IN ISOLATED ORGANIC MOLECULES USING CORE-HOLE CLOCK SPECTROSCOPY, G8140763269, G8395316192, G8504771637, G8540731314, Verbundprojekt 05K2016 - Nanoteilchenstruktur: Hochaufgelöste Struktur und Dynamik einzelner Nanoteilchen. Teilprojekt 1., STRUCTURE AND DYNAMICS OF ATOMS, IONS, MOLECULES AND SURFACES
OpenAlex ID: W2902751173