Calculated vibrational transition probabilities of OH(X2Π)
Calculated vibrational transition probabilities of OH(X2Π)
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DOI：
10.1016/0022-2852(74)90125-8
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发表时间：
1974-11
影响因子：
1.4
通讯作者：
F. Mies
中科院分区：
文献类型：
--
作者：
F. Mies
由Stevens Das， Wahl， Neumann和Krauss获得的OH的偶极矩函数（X2Π）被用来计算OH Meinel带的振动-旋转跃迁的绝对强度。计算充分考虑了对辐射跃迁概率有显著影响的自旋不耦合和振动-旋转耦合。分析了λ加倍对振动跃迁的影响，一般认为可以忽略不计。结果表示为Δv=v ' - v″，范围从基本过渡Δv= 1到Δv= 5泛音，forv ' = 1 - 9和j ' = 0.5 - 15.5。与现有数据进行了比较，并检查了OH光谱的各种特征，这些特征具有航空和实验意义。当Δv= 1-5时，给出了热平均发射率，并对通常由实验强度分布得出的旋转温度的有效性提出了质疑。
The theoretically derived dipole moment function of OH(X2Π) obtained by Stevens Das, Wahl, Neumann, and Krauss is used to calculate the absolute intensities of the vibrational-rotational transitions of the OH Meinel bands. The calculations take full account of the spin uncoupling and vibration-rotation coupling which markedly influence the radiative transition probabilities. The effect of lambda-doubling on the vibrational transitions is analyzed and generally found to be negligible. Results are tabulated for Δv=v′ –v″ ranging from the fundamental transitions Δv= 1 to the Δv= 5 overtone, forv′ = 1–9 andJ′ = 0.5 – 15.5. A comparison is made with available data, and various features of the OH spectrum are examined that are of aeronomical and experimental interest. Thermally averaged emission rates are presented for Δv= 1–5, and the validity of the rotational temperatures commonly derived from experimental intensity distributions is questioned.