Dynamics of the B 3Π(0u+) and A 3Π(1u) States of Chlorine by Laser Induced Fluorescence. Issue 1 (1992)

• Record Type: Journal Article
• Authors: Martínez, E.; Basterrechea, F. J.; Cabañas, B.; Puyuelo, P.; López, M. R.
• Is Part Of: Laser chemistry. Volume 12:Issue 1/2(1992)
• Page Start: 75
• Page End: 84
• Publication Date: 1992
• Subjects: Lasers in chemistry -- Periodicals; 542.8
• DOI: 10.1155/LC.12.75
• Languages: English
• ISSNs: 0278-6273

Abstract

Abstract : Chlorine B 3 Π(0 u + ) state lifetimes have been measured by laser-induced fluorescence in several predissociated (υ ′ = 14–19, 21) and non-predissociated (υ ′ = 5–12) levels. Trial and error Franck-Condon calculations have been performed to check the nature and position of the predissociating state. The results have been used to give a value ofR e for the A 3 Π(1 u ) state responsible for predissociation, R e = 2.48 ± 0.01 Å. The obtained data show that interference effects due to crossing between B and A states modify the lifetimes of the B state appreciably. The inadequacy of the low-lying vibrational levels region, i.e.υ ′ < 8, to measure the radiative lifetime of the B state (τ R (B)) is shown. Previous values forτ R (B) can therefore be affected by considerable errors.