On the radiative lifetime of the ([ital a] [sup 4][Sigma][sup [minus]],[ital v],[ital N],[ital F][sub [ital i]]) levels of the CH radical: An [ital ab] [ital initio] treatment

Journal Article · Wed Jun 15 00:00:00 EDT 1994 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.466703· OSTI ID:7116668

Hettema, H; Yarkony, D R ^[1]

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1. Department of Chemistry, The Johns Hopkins University, Baltimore, Maryland 21218 (United States)

The spin--forbidden radiative decay process CH([ital a] [sup 4][Sigma][sup [minus]])[r arrow]CH([ital X] [sup 2][Pi]) is studied using the full Breit--Pauli spin--orbit Hamiltonian and multireference configuration interaction wave functions comprised of 250 000--350 000 configuration state functions. The radiative lifetime of the ([ital a] [sup 4][Sigma][sup [minus]],[ital v],[ital N],[ital F][sub [ital i]])[r arrow][ital X] [sup 2][Pi] transitions were determined in a Hund's case (b) approximation. The pure radiative lifetimes are found to be quite long, on average being 12, 10, and 8 s for [ital v]=0,1,2, respectively.

• DOE Contract Number: FG02-91ER14189
• OSTI ID: 7116668
• Journal Information: Journal of Chemical Physics; (United States), Journal Name: Journal of Chemical Physics; (United States) Vol. 100:12; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR MOMENTUM
CARBONYL RADICALS
CONFIGURATION INTERACTION
COUPLING
DECAY
ENERGY-LEVEL TRANSITIONS
FORBIDDEN TRANSITIONS
HAMILTONIANS
INTERMEDIATE COUPLING
L-S COUPLING
MATHEMATICAL OPERATORS
PARTICLE DECAY
PARTICLE PROPERTIES
QUANTUM OPERATORS
RADIATIVE DECAY
RADICALS
SPIN