Laser photodissociation of C7H7+ created through multiphoton ionization of para-chlorotoluene

Pascal Lablanquie, Kazuhiko Ohashi, Nobuyuki Nishi

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The nature of the C7H7+ ion created through resonant dissociative multiphotoionization of para-chlorotoluene by an ultraviolet (UV) laser was investigated thanks to its interaction with a second laser beam. The dissociation pattern corresponding to one or several photon absorption could be observed. Cross section for the one-photon absorption in the 265/530 nm range revealed the presence of the tropylium and benzyl isomers and suggested they possessed substantial internal energy. This was confirmed by the study of the C7H7+ + hv⇒C 5H5++C2H2 reaction, and more precisely of its rate and of the kinetic energy released. A ladder switch mechanism for the three-photon dissociative ionization of para-chlorotoluene leading to C7H7+ is shown to agree with our results.

Original languageEnglish
Pages (from-to)399-408
Number of pages10
JournalJournal of Chemical Physics
Volume98
Issue number1
Publication statusPublished - 1993

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Photodissociation
photodissociation
Ionization
Photons
ionization
Lasers
photons
lasers
Ultraviolet lasers
Ladders
ultraviolet lasers
internal energy
ladders
Kinetic energy
Isomers
Laser beams
isomers
switches
kinetic energy
Switches

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Laser photodissociation of C7H7+ created through multiphoton ionization of para-chlorotoluene. / Lablanquie, Pascal; Ohashi, Kazuhiko; Nishi, Nobuyuki.

In: Journal of Chemical Physics, Vol. 98, No. 1, 1993, p. 399-408.

Research output: Contribution to journalArticle

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