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Laser-initiated iodine radical chemistry in single microdroplets

Journal Article


Abstract


  • Iodine radical reactions in single free-falling microdroplets of iodododecane, initiated using UV laser photolysis, are probed using Raman spectroscopy. Stimulated Raman spectra, with 532 nm laser excitation, are recorded at varying time delays from the UV pulse. I atom recombination reactions lead to I 2 that changes the optical properties of the microdroplet ultimately quenching the Raman signal. This quenching is observed over ∼10 ns, which is about the time resolution of the two-laser experiment. Although the kinetics are too rapid to be measured in current laser configuration, it demonstrates that radical kinetics can be followed in single microdroplets. © 2012 Elsevier B.V. All rights reserved.

Authors


  •   Vaughn, Bartholomew S. (external author)
  •   Tracey, Phillip J. (external author)
  •   Trevitt, Adam J.

Publication Date


  • 2012

Citation


  • Vaughn, B. S., Tracey, P. J. & Trevitt, A. J. (2012). Laser-initiated iodine radical chemistry in single microdroplets. Chemical Physics Letters, 551 134-138.

Scopus Eid


  • 2-s2.0-84867892224

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/4568

Has Global Citation Frequency


Number Of Pages


  • 4

Start Page


  • 134

End Page


  • 138

Volume


  • 551

Place Of Publication


  • Netherlands

Abstract


  • Iodine radical reactions in single free-falling microdroplets of iodododecane, initiated using UV laser photolysis, are probed using Raman spectroscopy. Stimulated Raman spectra, with 532 nm laser excitation, are recorded at varying time delays from the UV pulse. I atom recombination reactions lead to I 2 that changes the optical properties of the microdroplet ultimately quenching the Raman signal. This quenching is observed over ∼10 ns, which is about the time resolution of the two-laser experiment. Although the kinetics are too rapid to be measured in current laser configuration, it demonstrates that radical kinetics can be followed in single microdroplets. © 2012 Elsevier B.V. All rights reserved.

Authors


  •   Vaughn, Bartholomew S. (external author)
  •   Tracey, Phillip J. (external author)
  •   Trevitt, Adam J.

Publication Date


  • 2012

Citation


  • Vaughn, B. S., Tracey, P. J. & Trevitt, A. J. (2012). Laser-initiated iodine radical chemistry in single microdroplets. Chemical Physics Letters, 551 134-138.

Scopus Eid


  • 2-s2.0-84867892224

Ro Metadata Url


  • http://ro.uow.edu.au/scipapers/4568

Has Global Citation Frequency


Number Of Pages


  • 4

Start Page


  • 134

End Page


  • 138

Volume


  • 551

Place Of Publication


  • Netherlands