The radiative lifetime of the A1II state of BH |
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Institution: | School of Physics and Optoelectronics Engineering, Ludong University, Yantai 264025, People''s Republic of China |
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Abstract: | Second-order polarization propagator calculations of the X1Σ+ → A1II transition moment as well as the radiative lifetime of the A1II state of BH are reported. The calculated vibrational lifetimes are τ(v′ = 0) = 121 ns, τ(v′ = 1) = 129 ns, and τ(v′ = 2) = 137 ns. The τ(v′ = 0 lifetime agrees with the most recent experiment of τ(v′ = 0) = 125 ± 5 ns. We show that the electronic oscillator strength computed at the ground state equilibrium is rather different from the band absorption oscillator strength f00, which demonstrates that theoretical electronic oscillator strengths should not be expected to agree with experimentally determined band oscillator strengths. |
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