Physics – Chemical Physics
Scientific paper
Apr 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jchph.120.6028r&link_type=abstract
Journal of Chemical Physics, Volume 120, Issue 13, pp. 6028-6034 (2004).
Physics
Chemical Physics
19
Ultraviolet Spectra, Vibronic, Rovibronic, And Rotation-Electron-Spin Interactions, Line And Band Widths, Shapes, And Shifts, Fluorescence And Phosphorescence Spectra, Molecular And Chemical Processes And Interactions
Scientific paper
In a series of experiments devoted to the study of polycyclic aromatic hydrocarbons for astrophysical applications, the S2<--S0 transition of jet-cooled pyrene (C16H10) at 321 nm has been studied by an absorption technique for the first time. The spectra observed by cavity ring-down spectroscopy closely resemble the excitation spectra obtained earlier by laser-induced fluorescence (LIF) and show the same band clusters arising from the vibronic interaction of S2 with S1. We have also investigated pyrene when it was incorporated into 380 mK cold helium droplets. These spectra which were recorded employing LIF and molecular beam depletion spectroscopy are broadened and redshifted by 0.94 nm but retain the essential features of the gas phase spectra.
Henning Thomas
Huisken Friedrich
Krasnokutski Serge
Rouillé Gaël
Staicu Angela
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