O(1D2-3P2,1,0) 630.0, 636.4, and 639.2 nm forbidden emission line intensity ratios measured in the terrestrial nightglow
O(1D2-3P2,1,0) 630.0, 636.4, and 639.2 nm forbidden emission line intensity ratios measured in the terrestrial nightglow
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O(1D2-3P2,1,0) 630.0、636.4 和 639.2 nm 地面夜光中测量的禁发射线强度比
DOI：
10.1021/jp056163x
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发表时间：
2006
影响因子：
2.9
通讯作者：
Slanger Tg
中科院分区：
文献类型：
--
作者：
Sharpee Bd;Slanger Tg
在天文观测的地球夜辉光谱中，测量了O（1D 2 - 3 P2，1）630.0 nm和636.4nm的中性氧“红”发射线的强度比。观察到的强度比，I（630.0 nm）/I（636.4 nm）= 2.997 ± 0.016，与Storey和Zeippen（2000）最近计算的自发辐射系数值2.997一致，明显低于美国国家标准技术研究院（NIST）推荐的系数值3.10，低于实验室测定的3.1（Kemahan和Pang，1975）。在这些光谱中还观察到一条弱的发射线，其波长为639.174 ± 0.003nm，确定为与红色线相同多重态的高度光学禁戒跃迁O（1D 2 - 3 P0）639.1773nm。观测到的强度比，I（636.4 nm）/I（639.2 nm）= 1700 ± 700，比最新理论计算预测的低2倍。
The intensity ratio of the neutral oxygen "red" emission lines O( 1 D 2 - 3 P 2,1 ) 630.0 nm to 636.4 nm has been measured in terrestrial nightglow spectra obtained from astronomical instrumentation. The observed intensity ratio, I(630.0 nm)/I(636.4 nm) = 2.997 ± 0.016, is consistent with the value of 2.997 determined from the recent spontaneous emission coefficient calculations of Storey and Zeippen (2000), distinctly lower than the value of 3.10 calculated from those coefficients recommended by the National Institutes of Standards and Technology (NIST), and lower than the value of 3.1 measured by laboratory experiment (Kemahan and Pang, 1975). A weak emission line measured at 639.174 ± 0.003 nm has also been observed in these spectra and identified as the highly optically forbidden transition O( 1 D 2 - 3 P 0 ) 639.1773 nm of the same multiplet as the red lines. The observed intensity ratio, I(636.4 nm)/I(639.2 nm) = 1700 ± 700, is a factor of 2 lower than that predicted by most recent theoretical calculations.