Fragmentation of gas-phase after 193 nm laser excitation at 300 mJ/ fluence is probed by optical emission spectroscopy. Atomic C emission at 247.85 nm, and Mulliken, Deslandres-D’Azambuja, and Swan bands from species are observed. Time-resolved experiments reveal prompt C and fragmentation on a ns time scale or less, and delayed release on a μs scale. The latter is a pathway for energy relaxation in , whereby delayed electronically excited fragments are subsequently deexcited by photon emission. © 1996 The American Physical Society.
- Received 5 December 1995
- Published in the issue dated 15 May 1996
© 1996 The American Physical Society