Abstract Based on common volume rocket-borne measurements of temperature, densities of atomic oxygen and neutral air, we derived O(1D) nighttime concentrations and corresponding Atmospheric band emission (762 nm). This is one of the first retrievals of the nighttime O(1D) concentration. Recently, Kalogerakis, Sharma and co-workers have suggested a new production path of O(1D) based on the reaction of vibrationally excited OH and O. We calculate Atmospheric band volume emission related to the population of O 2 ( b 1 Σ g + ) from O(1D) and compare with total Atmospheric band emissions observed during the same rocket launch. This allows an estimation of the relative contribution of the new Kalogerakis-Sharma mechanism (KSM) to the total Atmospheric band emission. The concentration of O(1D) due to KSM amounts to several tens cm−3 with a peak around 95 km. The KSM gives an essential contribution to the total Atmospheric band volume emission (762 nm). Additionally, we illustrate analytically that the expressions for volume emission by the new KSM and the traditional two-step mechanism have similar functional dependences on the atmospheric concentrations of O and O2. This causes an ambiguity, when interpreting Atmospheric band observations in terms of the one mechanism or the other.

中文翻译：

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来自火箭载实验的夜间 O(1D) 和相应的大气带发射 (762 nm)

摘要 基于普通体积火箭携带的温度、原子氧密度和中性空气密度，我们推导出了 O(1D) 夜间浓度和相应的大气带发射 (762 nm)。这是夜间 O(1D) 浓度的首次检索之一。最近，Kalogerakis、Sharma 和同事提出了基于振动激发的 OH 和 O 反应的 O(1D) 的新生产路径。我们计算了与 O 2 ( b 1 Σ g + ) 来自 O(1D) 并与在同一火箭发射期间观察到的总大气波段发射进行比较。这允许估计新的 Kalogerakis-Sharma 机制 (KSM) 对总大气带发射的相对贡献。由于 KSM，O(1D) 的浓度达到几十 cm−3，峰值约为 95 km。KSM 对总大气带体积发射 (762 nm) 做出了重要贡献。此外，我们通过分析说明新 KSM 和传统两步机制的体积排放表达式对 O 和 O2 的大气浓度具有相似的函数依赖性。当根据一种机制或另一种机制解释大气波段观测时，这会导致歧义。