The transition dipole moments of dipole–allowed transitions between the following states were calculated in this study: X¹Σ⁺, A¹Π, B¹Σ⁺, C¹Δ, D¹Σ^–, and E¹Π; a³Π, b³Σ⁺, c³Σ^–, d³Π, and e³Δ, and those of the spin–forbidden transitions from the a³Π state to the X¹Σ⁺ state of boron monoxide cation. The CASSCF method was used, followed by the valence icMRCI approach. The radiative lifetimes of the vibrational states were of the order of 1 – 10 μs for the A¹Π state; 10 ns for the D¹Σ^–, e³Δ, and the first well of the B¹Σ⁺ states; 1 – 1000 ns for the second well of the B¹Σ⁺ state; 100 ns for the d³Π state; 0.1 – 1 μs for the b³Σ⁺ and E¹Π states; 10 – 100 μs for the C¹Δ state; and 10 – 10,000 μs for the c³Σ^– state. The transition from the first well of the B¹Σ⁺ state to the X¹Σ⁺ state and that from the double well of the B¹Σ⁺ state to the A¹Π state were the strongest, followed by the D¹Σ^– – A¹Π, E¹Π – A¹Π, d³Π – a³Π, and e³Δ – a³Π transitions. The transition from the second well of the B¹Σ⁺ state to the X¹Σ⁺ state was the weakest, followed by the C¹Δ – A¹Π, E¹Π – B¹Σ⁺, E¹Π – C¹Δ, E¹Π – D¹Σ^–, c³Σ^– – a³Π, and e³Δ – d³Π transitions. The variation in the radiative–lifetime distribution with the rotational angular quantum number J was evaluated. The radiative lifetimes of the vibrational states were of the order of 1 – 10 ms for the a³Π₁ state and 10 ms for the a³Π₀₊ state. The a³Π₁ – X¹Σ⁺₀₊ and a³Π₀₊ – X¹Σ⁺₀₊ transitions were weak. The transition properties reported herein may provide useful guidelines for related experimental and theoretical investigations in the near future.

在以下状态之间偶极允许跃迁的跃迁偶极矩在该研究中计算：X ¹ Σ ⁺，A ¹ Π，B ¹ Σ ⁺，C ¹ Δ，d ¹ Σ ^- ，以及E ¹ Π; 一个³ Π，B ³ Σ ⁺，C ³ Σ ^-，d ³ Π和e ³ Δ，以及那些从一个自旋禁戒跃迁的³ Π状态到X ¹ Σ ⁺一氧化硼阳离子的状态。使用CASSCF方法，然后使用价icMRCI方法。振动状态的辐射寿命是1的量级- 10微秒用于A ¹ Π状态; 10纳秒为d ¹ Σ ^-，E ³ Δ，并且第一阱中的B ^1个Σ ⁺状态; 1 - 1000 ns，以便第二阱中的B ¹ Σ ⁺状态; 100 ns，以便d ³ Π状态; 0.1 - 1微秒为B ^3个Σ ⁺和E ^1个Π状态; 10 - 100微秒为C ¹ Δ状态; 10 - 10,000微秒为C ³ Σ ^-州。由第一井的B中的过渡¹ Σ ⁺状态到X ¹ Σ ⁺状态和从B的双阱¹ Σ ⁺状态到A ¹ Π状态是最强的，其次是d ¹ Σ ^- -一个¹ Π，E ¹ Π -甲¹ Π，d ³ Π -一个³ Π和e ³ Δ -一个^3个Π过渡。从所述第二阱的跃迁的乙¹ Σ ⁺状态到X ¹ Σ ⁺状态最弱，其次由C ¹ Δ -甲¹ Π，E ¹ Π - B ¹ Σ ⁺，E ¹ Π - Visual C ¹ Δ，E ¹ Π - d ¹ Σ ^-，C ³ Σ ^- -一个³ Π和e ³ Δ - d ³ Π过渡。评估了辐射寿命分布随旋转角量子数J的变化。振动状态的辐射寿命是1的量级- 10毫秒为一个³ Π ₁状态和10ms为一个³0 ₀₊状态。在一个³ Π ₁ - X ¹ Σ ⁺ ₀₊和^3个Π ₀₊ - X ^1个Σ ⁺ ₀₊转变是微弱的。本文报道的过渡特性可为不久的将来进行相关的实验和理论研究提供有用的指导。