Rotationally resolved fluorescence-dip and ion-dip spectra of single rovibronic states of benzene
نویسنده
چکیده
We report fluorescence-dip as well as ion-dip spectra of single rovibronic one-photon states of benzene with a linewidth as narrow as 0.14 cm'1. The selective excitation of the rovibronic states was achieved through the combination of a frequency-doubled pulsed amplified cw dye laser (Avuv 100 MHz) and a collimated molecular beam. The detailed analysis of the dip spectra shows that the observed spectral features correspond to single rovibronic transitions if suitable states are excited. From the spectra, precise harmonic frequencies and anharmonic constants for the So state are determined. A hitherto unknown Darling-Dennison resonance of the overtones of v, with the 52 state is found.
منابع مشابه
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Rotationally resolved electronic spectroscopy yields a wealth of information on molecular structures in different electronic states. Unfortunately, for large molecules the spectra get rapidly very congested owing to close-lying vibronic bands, other isotopomers with similar zero-point energy shifts, or large-amplitude internal motions. A straightforward assignment of single rovibronic lines and...
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