Laser desorption jet-cooling spectroscopy of the benzoic acid monomer

Meijer, Gerard; Vries, Mattanjah S. De; Hunziker, Heinrich E.; Wendt, H. Russell.

doi:10.1021/j100374a006

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Laser desorption jet-cooling spectroscopy of the benzoic acid monomer

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Meijer, G., Vries, M. S. D., Hunziker, H. E., & Wendt, H. R. (1990). Laser desorption jet-cooling spectroscopy of the benzoic acid monomer. The Journal of Physical Chemistry, 94(11), 4394-4396. doi:10.1021/j100374a006.

Cite as: https://hdl.handle.net/21.11116/0000-000C-22A0-8

Abstract

Laser desorption followed by jet cooling has been used to produce an intense beam of internally cooled benzoic acid monomers. As a result, the S₁ ← S₀ gas-phase absorption spectrum of the jet-cooled benzoic acid monomer could be identified for the first time. Delayed ionization out of a triplet state, populated by rapid S₁→ T intersystem crossing, followed by mass-selective detection of the parent ions is performed. The spectral lines have a Lorentzian shape with a line width of 6.5 cm^-1, corresponding to an intersystem crossing rate of 1.2 x 10¹² s^-1.