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Coulomb explosion imaging of CH3I and CH2ClI photodissociation dynamics

Allum, Felix; Burt, Michael; Amini, Kasra; Boll, Rebecca; Köckert, Hansjochen; Olshin, Pavel K; Bari, Sadia; Bomme, Cédric; Brauße, Felix and Cunha de Miranda, Barbara, et al. (2018) In Journal of Chemical Physics 149(20). p.204313-204313
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.... (More)

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.

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Journal of Chemical Physics
volume
149
issue
20
pages
204313 - 204313
publisher
American Institute of Physics
external identifiers
  • scopus:85057771736
ISSN
0021-9606
DOI
10.1063/1.5041381
language
English
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yes
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b82dd4bf-36e8-4385-b37f-60ee398bb168
date added to LUP
2018-12-12 09:01:07
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2019-03-19 04:03:31
@article{b82dd4bf-36e8-4385-b37f-60ee398bb168,
  abstract     = {<p>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.</p>},
  author       = {Allum, Felix and Burt, Michael and Amini, Kasra and Boll, Rebecca and Köckert, Hansjochen and Olshin, Pavel K and Bari, Sadia and Bomme, Cédric and Brauße, Felix and Cunha de Miranda, Barbara and Düsterer, Stefan and Erk, Benjamin and Géléoc, Marie and Geneaux, Romain and Gentleman, Alexander S and Goldsztejn, Gildas and Guillemin, Renaud and Holland, David M P and Ismail, Iyas and Johnsson, Per and Journel, Loïc and Küpper, Jochen and Lahl, Jan and Lee, Jason W L and Maclot, Sylvain and Mackenzie, Stuart R and Manschwetus, Bastian and Mereshchenko, Andrey S and Mason, Robert and Palaudoux, Jérôme and Piancastelli, Maria Novella and Penent, Francis and Rompotis, Dimitrios and Rouzée, Arnaud and Ruchon, Thierry and Rudenko, Artem and Savelyev, Evgeny and Simon, Marc and Schirmel, Nora and Stapelfeldt, Henrik and Techert, Simone and Travnikova, Oksana and Trippel, Sebastian and Underwood, Jonathan G and Vallance, Claire and Wiese, Joss and Ziaee, Farzaneh and Brouard, Mark and Marchenko, Tatiana and Rolles, Daniel},
  issn         = {0021-9606},
  language     = {eng},
  month        = {11},
  number       = {20},
  pages        = {204313--204313},
  publisher    = {American Institute of Physics},
  series       = {Journal of Chemical Physics},
  title        = {Coulomb explosion imaging of CH3I and CH2ClI photodissociation dynamics},
  url          = {http://dx.doi.org/10.1063/1.5041381},
  volume       = {149},
  year         = {2018},
}