Lifetimes and collisional quenching cross sections of single rotational states in bromine

Journal Article · Sun Jun 01 04:00:00 EDT 1980 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.439042· OSTI ID:5285044

Luypaert, R; De Vlieger, G; Craen, J V

Lifetimes and self-quenching cross sections of individual rotational levels in the B /sup 3/Pi/sub 0+u/ state of /sup 79/Br/sub 2/ and /sup 81/Br/sub 2/ were measured by observing the fluorescence decay following excitation by acousto-optically chopped, single mode Ar/sup +/ and Kr/sup +/ lasers. The results, which depend strongly on v' and J', were interpreted in terms of gyroscopic predissociation. This type of predissociation, exhibiting maxima in the neighborhood of v'=33 and v'< or approx. =18, appears to be much stronger in bromine than in iodine.

• Research Organization: Laboratorium voor Quantum Optika, Vrije Universiteit Brussel, Brussels, Belgium
• OSTI ID: 5285044
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 72:11; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular &amp; Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
BROMINE
COLLISIONS
CROSS SECTIONS
DISSOCIATION
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FLUORESCENCE
HALOGENS
LIFETIME
LUMINESCENCE
MOLECULE COLLISIONS
MOLECULE-MOLECULE COLLISIONS
NONMETALS
PREDISSOCIATION
ROTATIONAL STATES