18 Laser Spectroscopy of Molecular Ions

Accession Number
    Document Delivery

Authors
    Weinkauf R., Boesl U.

Title
    LASER SPECTROSCOPY OF MOLECULAR IONS - THE A-X TRANSITION IN THE
    OCS RADICAL CATION

Source
    Journal of Chemical Physics. 101(10):8482-93,  1994 Nov 15.

ISSN
    0021-9626

Abstract
    Spectroscopy of the OCS/sup +/ ion in its ground and first excited states has
    been performed over a wide energy range using one-photon dissociation
    spectroscopy. We used multiphoton ionization in the first step for state
    selective ion preparation in single well-defined vibrational and spin-orbit
    states. This simplifies the ion spectra of the transition to the first excited A
    state considerably and thereover delivers the information of the ion ground
    state by using hot ion preparation. For the stretching vibrations
    anharmonicities have been observed and for the first overtone of the bending
    vibration Fermi resonances have been found. Rotational constants could be
    determined for the vibrational ground states of the X and A ionic states in
    both spin-orbit components. A new double resonance technique was applied
    to measure vibrational frequencies in the ionic X ground state.

Language
    English

Publication Type
    Article

CC Categories
    Physical chemistry/chemical physics.

Subset
    Current Contents/Physical, Chemical & Earth Sciences

Institution
    Reprint available from:
    Weinkauf R.
    HEINRICH-HEINE-UNIVERSITAET DUESSELDORF
    INST PHYSICAL CHEMISTRY & ELECTROCHEMISTRY
    40204 DUESSELDORF
    GERMANY