PHOTODISSOCIATION DYNAMICS OF GAS-PHASE C-60 PROBED BY OPTICAL-EMISSION SPECTROSCOPY

Authors
HESZLER P CARLSSON JO DEMIREV P
Citation
P. Heszler et al., PHOTODISSOCIATION DYNAMICS OF GAS-PHASE C-60 PROBED BY OPTICAL-EMISSION SPECTROSCOPY, Physical review. B, Condensed matter, 53(19), 1996, pp. 12541-12544
Citations number
30
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
53
Issue
19
Year of publication
1996
Pages
12541 - 12544
Database
ISI
SICI code
0163-1829(1996)53:19<12541:PDOGCP>2.0.ZU;2-3
Abstract
Fragmentation of gas-phase C-60 after 193 nm laser excitation at 300 m J/cm(2) fluence is probed by optical emission spectroscopy. Atomic C e mission at 247.85 nm, and Mulliken, Deslandres-D'Azambuja, and Swan ba nds from C-2 species are observed. Time-resolved experiments reveal pr ompt C and C-2 fragmentation on a ns time scale or less, and delayed C -2 release on a mu s scale. The latter is a pathway for energy relaxat ion in C-60,whereby delayed electronically excited C-2 fragments are s ubsequently deexcited by photon emission.