Time-resolved observation of laser-excited C[sub 60] decay

Conference · Wed Oct 20 04:00:00 EDT 1993 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:5316164

Ding, D; Klots, C E; Haufler, R E; Compton, R N ^[1]

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1. Oak Ridge National Laboratory, P. O. Box 2008, Oak Ridge, Tennessee 37831-6125 (United States)

A technique for measuring the time-resolved delayed electrons and C[sup +][sub [ital n]] ions from C[sub 60] excited by nanosecond or picosecond laser irradiation is presented. Ions produced well after the laser pulse (delayed ionization) are mainly C[sup +][sub 60] with weak signals from large fragments such as C[sup +][sub 58], C[sup +][sub 56], C[sup +][sub 50], and no low-mass ions are observed. A dominant slow electron (thermal with [ital kT][similar to]0.3 eV) distribution was observed for the excitation of C[sub 60] for wavelengths longer than [similar to]210 nm. These results are discussed in relation to a thermionic'' emission model.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5316164
• Report Number(s): CONF-9306200--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 290:1
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
CARBON
COLLISIONS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELEMENTS
ENERGY LEVELS
EXCITED STATES
FULLERENES
IONIZATION
LASER RADIATION
LASER SPECTROSCOPY
MEASURING METHODS
MOLECULE COLLISIONS
NONMETALS
PHOTOELECTRON SPECTROSCOPY
PHOTON COLLISIONS
PHOTON-MOLECULE COLLISIONS
RADIATIONS
SPECTROSCOPY
ULTRAVIOLET RADIATION