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Coulomb-explosion imaging of concurrent CH2 BrI photodissociation dynamics

Burt, Michael; Boll, Rebecca; Lee, Jason W.L.; Amini, Kasra; Köckert, Hansjochen; Vallance, Claire; Gentleman, Alexander S.; Mackenzie, Stuart R.; Bari, Sadia and Bomme, Cédric, et al. (2017) In Physical Review A 96(4).
Abstract

The dynamics following laser-induced molecular photodissociation of gas-phase CH2BrI at 271.6 nm were investigated by time-resolved Coulomb-explosion imaging using intense near-IR femtosecond laser pulses. The observed delay-dependent photofragment momenta reveal that CH2BrI undergoes C-I cleavage, depositing 65.6% of the available energy into internal product states, and that absorption of a second UV photon breaks the C-Br bond of CH2Br. Simulations confirm that this mechanism is consistent with previous data recorded at 248 nm, demonstrating the sensitivity of Coulomb-explosion imaging as a real-time probe of chemical dynamics.

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Physical Review A
volume
96
issue
4
publisher
American Physical Society (APS)
external identifiers
  • scopus:85032446006
  • wos:000413164500008
ISSN
2469-9926
DOI
10.1103/PhysRevA.96.043415
language
English
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yes
id
9241ea71-7d06-4439-81da-14189b3f7721
date added to LUP
2017-11-07 14:01:28
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2018-04-29 04:43:34
@article{9241ea71-7d06-4439-81da-14189b3f7721,
  abstract     = {<p>The dynamics following laser-induced molecular photodissociation of gas-phase CH2BrI at 271.6 nm were investigated by time-resolved Coulomb-explosion imaging using intense near-IR femtosecond laser pulses. The observed delay-dependent photofragment momenta reveal that CH2BrI undergoes C-I cleavage, depositing 65.6% of the available energy into internal product states, and that absorption of a second UV photon breaks the C-Br bond of CH2Br. Simulations confirm that this mechanism is consistent with previous data recorded at 248 nm, demonstrating the sensitivity of Coulomb-explosion imaging as a real-time probe of chemical dynamics.</p>},
  articleno    = {043415},
  author       = {Burt, Michael and Boll, Rebecca and Lee, Jason W.L. and Amini, Kasra and Köckert, Hansjochen and Vallance, Claire and Gentleman, Alexander S. and Mackenzie, Stuart R. and Bari, Sadia and Bomme, Cédric and Düsterer, Stefan and Erk, Benjamin and Manschwetus, Bastian and Müller, Erland and Rompotis, Dimitrios and Savelyev, Evgeny and Schirmel, Nora and Techert, Simone and Treusch, Rolf and Küpper, Jochen and Trippel, Sebastian and Wiese, Joss and Stapelfeldt, Henrik and De Miranda, Barbara Cunha and Guillemin, Renaud and Ismail, Iyas and Journel, Loïc and Marchenko, Tatiana and Palaudoux, Jérôme and Penent, Francis and Piancastelli, Maria Novella and Simon, Marc and Travnikova, Oksana and Brausse, Felix and Goldsztejn, Gildas and Rouzée, Arnaud and Géléoc, Marie and Geneaux, Romain and Ruchon, Thierry and Underwood, Jonathan and Holland, David M.P. and Mereshchenko, Andrey S. and Olshin, Pavel K. and Johnsson, Per and Maclot, Sylvain and Lahl, Jan and Rudenko, Artem and Ziaee, Farzaneh and Brouard, Mark and Rolles, Daniel},
  issn         = {2469-9926},
  language     = {eng},
  month        = {10},
  number       = {4},
  publisher    = {American Physical Society (APS)},
  series       = {Physical Review A},
  title        = {Coulomb-explosion imaging of concurrent CH2 BrI photodissociation dynamics},
  url          = {http://dx.doi.org/10.1103/PhysRevA.96.043415},
  volume       = {96},
  year         = {2017},
}