Radiative lifetimes of the low-lying electronic states of CuF and CuCl: Identification of the excited states of CuCl

• Published in: Chemical physics 1987, Vol.111 (1), p.129-136
• Main Authors: Delaval, J.M., Lefebvre, Y., Bocquet, H., Bernage, P., Niay, P.
• Format: Article
• Language: English
• Subjects: Atomic and molecular physics; Exact sciences and technology; Fluorescence and phosphorescence; radiationless transitions, quenching (intersystem crossing, internal conversion); Molecular properties and interactions with photons; Physics
• ISSN: 0301-0104
• DOI: 10.1016/0301-0104(87)87014-3

Radiative decay of the fluorescence excited by a pulsed laser has been used to measure the radiative lifetimes of excited electronic states of the isovalent CuF and CuCl diatomic molecules. Comparison of the lifetimes in CuCl with those in the better known CuF molecule leads to assign the following symmetries to the excited states of CuCl: A 3Π 2 (τ = 60 μs), B 3Π 1 (τ = 3.3 μs), C 3Π 0 (τ = 3.2 μs), D 1Π (τ = 0.45 μs), E 1Σ + (τ = 0.43 μs), F 3Δ 1 (τ = 6.3 μs).