Fragmentation of gas-phase (Formula presented) after 193 nm laser excitation at 300 mJ/(Formula presented) fluence is probed by optical emission spectroscopy. Atomic C emission at 247.85 nm, and Mulliken, Deslandres-D’Azambuja, and Swan bands from (Formula presented) species are observed. Time-resolved experiments reveal prompt C and (Formula presented) fragmentation on a ns time scale or less, and delayed (Formula presented) release on a μs scale. The latter is a pathway for energy relaxation in (Formula presented), whereby delayed electronically excited (Formula presented) fragments are subsequently deexcited by photon emission.
|Number of pages||4|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - Jan 1 1996|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics