Transition probability of the 1S → 1D2 emission of atomic oxygen

Abstract

The transition probability of the ¹S₀ → ¹D₂ emission (5577 Å) of atomic oxygen has been calculated in the LS‐coupling scheme. The wave functions used in this work have been calculated by the multiconfiguration Hartree–Fock method. Two sets of wave functions were generated; the larger set consists of 15 configurations for the ¹S₀ state and 21 for the ¹D₂ state, and the smaller set consists of seven (¹S₀) and nine (¹D₂) configurations. The resulting value of 1.22 s⁻¹ agrees well with the previous calculations of recent years, and is also in essential agreement with experimental measurement.