Emission spectra and radiative lifetimes of the Cameron bands of CO trapped in solid rare gas matrices
1980; American Institute of Physics; Volume: 73; Issue: 12 Linguagem: Inglês
10.1063/1.440138
ISSN1520-9032
AutoresJ. Fournier, Hassan H. Mohammed, J. Deson, C. Vermeil, J. Schamps,
Tópico(s)Spectroscopy and Laser Applications
ResumoThe emission spectrum of the Cameron bands (a 3Π→X1 Σ+) of CO molecules trapped in solid Ne, Ar, and Kr has been studied using Xe resonance lamp excitation (λ=147 nm). The lifetime of the a 3Π state has been measured in solid Ne and found to be 90 msec. The decay time of this state is exponential within the range of experimental errors. The lifetime has been calculated assuming spin–orbit mixing between 1Σ+ and 3Π0 states, and found to be 94 msec for J=0. The lifetime values in Ar and Kr matrices are found to be 7.2 and <1 msec, respectively; this is consistent with the matrix shifts in solid Ne, Ar, and Kr, which for the 0–0 bands have been found to be −305, −946, and −2812 cm−1, respectively.
Referência(s)