Jet-Cooled Fluorescence Spectroscopy of a Natural Product: Anethole

Electronic spectroscopy of jet-cooled YbNH3.

We report the first spectroscopic study of a complex consisting of a rare earth atom in combination with ammonia. Using two-color resonance-enhanced multiphoton ionization (REMPI) spectroscopy, the lowest energy electronic transition of YbNH(3) has been found in the near-infrared. The spectrum arises from a spin-forbidden transition between the (1)A(1) ground electronic state and the lowest (3)...

Jet-cooled laser spectroscopy of the cyclohexoxy radical.

The laser-induced fluorescence and laser-excited dispersed fluorescence spectra of the cyclohexoxy radical has been observed under two sets of free-jet-cooling conditions, characterized by rotational temperatures of approximately 1 and 100 K. Although five conformers of cyclohexoxy are possible, it appears that all presently observed spectral bands can be accounted for by a single one. All cold...

Resonant two-photon ionization spectroscopy of jet-cooled Au,

A band system ofjet-cooled Au, has been located in the near infrared region of the spectrum using resonant two-photon ionization spectroscopy. The origin band is located at 13 354.15 cm-’ and the system extends more than 700 cm ~’ further to the blue. The excited state displays a radiative lifetime of approximately 28 ps, corresponding to an absorption oscillator strength offzO.0003. Accordingl...

Infrared Spectroscopy of Slit - Jet Cooled Radicals and Ions

Infrared cavity ringdown spectroscopy of jet-cooled polycyclic aromatic hydrocarbons.

Infrared absorption spectra of the CH stretching region were observed for naphthalene, anthracene, phenanthrene, pyrene, and perylene using a heated, supersonic, slit-jet source and cavity ringdown spectroscopy. Band positions and intensities recorded with 0.2-cm-1 resolution were compared with previous gas-phase and argon matrix isolation experiments, as well as theoretical calculations. The l...