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Journal Article

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
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.