Metastable ion lifetimes measured by photoion-photoelectron coincidence

Conference · Fri Jan 01 04:00:00 EST 1982 · AIP Conf. Proc.; (United States)

OSTI ID:5822425

Willett, G D

The Photoion-Photoelectron coincidence (PIPECO) technique, in which nominally zero-kinetic energy electrons are detected in coincidence with their concomitant parent or fragment ions, can be used to measure the absolute fragmentation rates and kinetic energy release distributions (KERDS) of gas phase state selected ions. This lecture will be used to review the technique and discuss results for the unimolecular decomposition of the following metastable molecular ions: C/sub 6/H/sub 5/X/sup +/(X=Cl,Br,I), C/sub 8/H/sub 8//sup +/, C/sub 6/H/sub 6//sup +/, C/sub 4/H/sub 4/X/sup +/(X=O,NH). Analysis of their associated photoionization efficiency curves and threshold photoelectron spectra together with a comparison of their measured dissociation rates with those calculated using statistical theories will be used to demonstrate the versatility of the technique in establishing metastable molecular ion dissociation mechanisms.

• Research Organization: Univ. of Sydney, Australia
• OSTI ID: 5822425
• Report Number(s): CONF-820245-
• Conference Information: Journal Name: AIP Conf. Proc.; (United States) Journal Volume: 86
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AROMATICS
ATOM COLLISIONS
BENZENE
CHARGED PARTICLES
COINCIDENCE METHODS
COLLISIONS
COUNTING TECHNIQUES
DATA
DISSOCIATION
ELECTRON SPECTRA
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
IONIZATION
IONS
KINETICS
MOLECULAR IONS
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTON COLLISIONS
PHOTON-ATOM COLLISIONS
REACTION KINETICS
SPECTRA