Dynamics of the B and A states of chlorine by laser induced fluorescence
- Martinez, E. 1
- Basterrechea, F.J. 1
- Cabanas, B. 1
- Puyuelo, P. 2
- Lopez, M.R. 1
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1
Universidad de Castilla-La Mancha
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2
Universidad de La Rioja
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ISSN: 0278-6273
Ano de publicación: 1992
Volume: 12
Número: 1-2
Páxinas: 275-284
Tipo: Artigo
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Resumo
Chlorine B 3∏(0u +) state lifetimes have been measured by laser-induced fluorescence in several predissociated (v′ = 14-19, 21) and non-predissociated (v′ = 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 of Re for the A 3∏(1u) state responsible for predissociation, Re = 2.48 ± 0.01 angstrom. 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. v′ < 8, to measure the radiative lifetime of the B state (τR(B)) is shown. Previous values for τR(B) can therefore be affected by considerable errors.