R.E. Walkup, Ph. Avouris
JVSTA
Time-resolved absorption spectra are recorded for Ga atoms produced by the photolytic action of 300 fs, 248.5 nm laser pulses on gas-phase GaCl molecules. Photodissociation of GaCl at 248.5 nm produces both ground-state ( 2P1/2) and spin-orbit-excited (2P 1/2) Ga atoms, resulting in strong transient-absorption features at 403.3 and 417.2 nm, respectively. The experimental spectra are analyzed to obtain the kinetic energy of the photofragments, which is estimated to be ≃0.08 eV for both channels. The analysis suggests that the dissociation limits are (1) Ga 2P1/2+Cl* 2P 1/2 for the 403.3 nm channel; and (2) Ga* 2P 3/2+Cl 2P3/2 for the 417.2 nm channel. From these results, a new estimate for the dissociation energy of GaCl is obtained: D00=4.80±0.03 eV. © 1993 American Institute of Physics.
R.E. Walkup, Ph. Avouris
JVSTA
R.E. Walkup, R.W. Dreyfus, et al.
Colloque International du CNRS 1982
J.H. Glownia, P.P. Sorokin
QELS 1996
J.H. Glownia, D.R. Gnass, et al.
Journal of the Optical Society of America B: Optical Physics