Photofragment translational spectroscopy with state-selective "universal detection": The ultraviolet photodissociation of CS2. Academic Article uri icon

abstract

  • The photodissociation of CS2was investigated at 193 nm using photofragment translational spectroscopy. The experiments were conducted at the Chemical Dynamics Beamline at the Advanced Light Source using vacuum UV synchrotron radiation for product photoionization. State-selective neutral time-of-flight (TOF) was demonstrated on this apparatus for the first time, discriminating between electronic states of the sulfur atom. This selectivity allowed a high resolution determination of the translational energy distribution for the CS + S(1D) and, by difference, the translational energy distribution for the CS + S(3P) channel. The S(3P)/S(1D) branching ratio was 2.90.2 in agreement with published results. Both asymptotic channels had similar velocity-dependent anisotropies which decreased with translational energy release. Vibrationally resolved TOF spectra were observed for the S(1D) channel with a maximum at CS(v=2). A simulation of the coincident translational energy distibution was consistent with CS rotational energies of ~ 3 kcal/mole avg.

published proceedings

  • ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY

author list (cited authors)

  • McGivern, W. S., Sorkahabi, O., Razvi, A., Suits, A. G., & North, S. W.

complete list of authors

  • McGivern, WS||Sorkahabi, O||Razvi, A||Suits, AG||North, SW

publication date

  • January 1, 1999 11:11 AM