Coulomb explosion imaging of CH3I and CH2ClI photodissociation dynamics

Research output: Contribution to journalArticle

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.

Details

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
  • 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
Organisations
External organisations
  • University of Oxford
  • German Electron Synchrotron (DESY)
  • Saint Petersburg State University
  • Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy
  • Paris-Sorbonne University
  • University of Paris-Saclay
  • Daresbury Laboratory
  • Kansas State University
  • Aarhus University
  • University College London
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Chemistry
Original languageEnglish
Pages (from-to)204313
JournalJournal of Chemical Physics
Volume149
Issue number20
Publication statusPublished - 2018 Nov 28
Publication categoryResearch
Peer-reviewedYes

Related research output

Lahl, J., 2019 Mar 4, Lund: Department of Physics, Lund University.

Research output: ThesisDoctoral Thesis (compilation)

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