FD02		15min8:47

TAKUMICHI SUTANI, TAKAYUKI EBATA AND NAOHIKO MIKAMI, Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-77, Japan.

Carbon atom generation following the predissociation of Rydberg states of CO has been investigated . The Rydberg states of CO were prepared by two-color double resonant excitation through the 3sB¹⁺ state and the atomic carbon fragment was detected by resonance-enhanced multiphoton ionization. The 4s\,~\,6s\,(v=0),~5s\,(v=1),~4p\,~\,5p\,(v=0),~3d\,(v=0,1),~ 4d\,(v=0),~5d\,(v=0),~4f\,~\,5f\,(v=0) Rydberg states and the W¹(v=2,3) state were found to generate ³P carbon atom.

Mechanism of the predissociation of these high Rydberg states will be discussed based on the atomic carbon fragment yield measurement and on Doppler line shape measurement.