The transition dipole moments of the dipole–allowed transitions between the X²Σ⁺, A²Π, B²Σ⁺, 2²Π, 1²Σ^–, and C²Δ states of the carbon monosulfide cation were calculated using the complete active space self–consistent field method, followed by the internally contracted multireference configuration interaction approach. The transition dipole moments of the spin–forbidden transitions from the a⁴Σ⁺ state to the X²Σ⁺ and A²Π states were computed. The radiative lifetimes were of the order of 1 – 10 µs, 100 ns, 1 µs, 10 – 100 µs, and 1 – 10 µs for the A²Π, B²Σ⁺, 2²Π, 1²Σ^–, and C²Δ states, respectively. The transition frequencies, Einstein A coefficients, and Franck–Condon factors of all these spontaneous vibronic emissions from these systems were calculated. The emissions from the A²Π – X²Σ⁺, B²Σ⁺ – X²Σ⁺, B²Σ⁺ – A²Π, 2²Π – A²Π, and C²Δ – A²Π systems were strong, suggesting that the 2²Π state could be measured in a spectroscopy experiment via 2²Π – A²Π transition. Those from the 2²Π – B²Σ⁺, 1²Σ^– – 2²Π, and C²Δ – 2²Π systems were weak. The radiative lifetimes of the a⁴Σ⁺_1/2 and a⁴Σ⁺_3/2 states were approximately 10 ms. Among these spin–forbidden transitions, the emissions from the a⁴Σ⁺_3/2 – A²Π_3/2 system were relatively strong. The radiative–lifetime distribution of each vibrational level versus the rotational quantum number was evaluated for the A²Π, B²Σ⁺, 2²Π, 1²Σ^–, C²Δ, and a⁴Σ⁺ states.

在X之间的偶极允许跃迁的跃迁偶极矩² Σ ⁺，A ² Π，B ² Σ ⁺，2 ² Π，1 ² Σ ^- ，和C ²使用完整计算了一硫化碳阳离子的Δ状态活动空间自洽字段方法，然后是内部收缩的多引用配置交互方法。从一个自旋禁戒跃迁的跃迁偶极矩⁴ Σ ⁺状态到X ² Σ ⁺和A ²states状态被计算。的辐射寿命是1的量级- 10微秒，100纳秒，1微秒，10 - 100微秒，和1 - 10微秒为A ² Π，B ² Σ ⁺，2 ² Π，1 ² Σ ^- ，和c ^ ² Δ指出，分别。计算了这些系统中所有这些自发振动的电子跃迁的跃迁频率，爱因斯坦A系数和弗兰克-康登因子。来自A的排放物² X - Π ² Σ ⁺，B ² Σ ⁺ - X ² Σ ⁺，B ² Σ ⁺ -甲² Π，2² Π -甲² Π，和C ² Δ -甲² Π系统是强烈，表明2 ² Π状态可以在一个光谱实验经由2来测量² Π -甲² Π过渡。那些从2 ² Π - B ² Σ ⁺，1 ² Σ ^- - 2 ² Π，和C ² Δ - 2个² Π系统是微弱的。的一个的辐射寿命⁴ Σ ⁺ _1/2和⁴ Σ ⁺ _3/2状态约为10毫秒。在这些自旋禁阻跃迁，从一排放⁴ Σ ⁺ _3/2 -甲² Π _3/2系统是比较强的。各振动能级与转动量子数的辐射-寿命分布为A，评价² Π，B ² Σ ⁺，2 ² Π，1 ² Σ ^-，C ² Δ和^4点Σ ⁺的状态。