Yj. Shiu et Ic. Chen, FLUORESCENCE EXCITATION-SPECTRA OF HCO (B)OVER-TILDE-(2)A'-(X)OVER-TILDE(2)A' IN A SUPERSONIC JET, Journal of molecular spectroscopy, 165(2), 1994, pp. 457-463
Citations number
29
Categorie Soggetti
Spectroscopy,"Physics, Atomic, Molecular & Chemical
The HCO radical was produced by photolysis of acetaldehyde in a supers
onic molecular jet. HCO B2 A'-X2 A' transitions were detected by laser
-induced fluorescence. Eight vibronic bands were observed that showed
both a- and b-type transitions, indicating that the observed transitio
ns are from the B state, not the C state. The quantum yield of fluores
cence abruptly decreased at lines approximately 2770 cm-1 above the ze
ro vibrational state of B, indicating the onset of a channel leading t
o predissociation. Rotational spectra of the lowest six vibrational le
vels of the B state are analyzed. (C) 1994 Academic Press, Inc.