Airglow Derived Measurements of Q-Branch Transition Probabilities for Several Hydroxyl Meinel Bands
Airglow Derived Measurements of Q-Branch Transition Probabilities for Several Hydroxyl Meinel Bands
复制标题
气辉衍生的几个羟基美尼尔带 Q 分支跃迁概率的测量
作者：
C. Franzen;P. Espy;N. Hofmann;R. Hibbins;A. Djupvik
光谱测量的羟基（OH）气辉排放量往往被用来推断中性温度附近的中层顶。为了计算准确的温度，需要OH气辉中各种跃迁的正确爱因斯坦系数。然而，一些研究表明，实验和理论上最常用的OH Meinel（6，2）跃迁Q支的Einstein自发辐射跃迁几率被高估。将他们的工作推广到v′ = 3到9的几个Δv = 2和3跃迁，我们确定了前四条Q支转动线的爱因斯坦系数.这些都来自高分辨率，高信号噪声光谱观测的OH气辉在夜空中的北欧光学望远镜。从这些光谱计算的Q支爱因斯坦系数表明，目前在HITRAN数据库中列出的值高估了许多Q支跃迁概率。大气温度的影响来自OH Q-分支测量进行了讨论。
Spectroscopic measurements of the hydroxyl (OH) airglow emissions are often used to infer neutral temperatures near the mesopause. Correct Einstein coefficients for the various transitions in the OH airglow are needed to calculate accurate temperatures. However, studies from some studys showed experimentally and theoretically that the most commonly used Einstein spontaneous emission transition probabilities for the Q-branch of the OH Meinel (6,2) transition are overestimated. Extending their work to several Δv = 2 and 3 transitions from v′ = 3 to 9, we have determined Einstein coefficients for the first four Q-branch rotational lines. These have been derived from high resolution, high signal to noise spectroscopic observations of the OH airglow in the night sky from the Nordic Optical Telescope. The Q-branch Einstein coefficients calculated from these spectra show that values currently tabulated in the HITRAN database overestimate many of the Q-branch transition probabilities. The implications for atmospheric temperatures derived from OH Q-branch measurements are discussed.
DOI：
10.1016/j.jqsrt.2013.07.002
发表时间：
2013-11-01
影响因子：
2.3
作者：
Rothman, L. S.;Gordon, I. E.;Wagner, G.
通讯作者：
Wagner, G.