Radiative Lifetimes of the A^2Π State of CO^+†

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Abstract
The radiative lifetime of the A2Π state of CO+ for the vibrational levels υ′ = 1, 2, 3, 4, 5, and 6 have been measured at six pressures. The lifetimes extrapolated to zero pressure were 3.97±0.12, 4.11±0.27, 3.16±0.57, 3.95±0.09, 4.11±0.27, and 3.98±0.12 μs, respectively. The corresponding oscillator strengths for the (1,0), (2,0), (3,0), (4,0), (5,0), and (6,0) transitions were 0.458 × 10−3, 0.659 × 10−3, 0.682 × 10−3, 0.571 × 10−3, 0.409 × 10−3, and 0.259 × 10−3, respectively.