Comprehensive Measurement of Hydroxyl Product State Distribution from Hydrogen and Ozone

中间层上部的氢原子和臭氧之间的反应产生振动激发的羟基，导致两个重要的后果。首先，受激发的羟基辐射衰变产生羟基夜间气辉层，广泛用于证明羟基化学生成速率和研究波动现象。其次，高激发羟基的碰撞松弛是夜间中层上层加热的关键。中间层能量收支模型依赖于对羟基产物分布及其碰撞和辐射衰变的准确理解。尽管这一过程很重要，但在现有的测量中没有考虑到反应放热的很大一部分。因此，研究者正在进行原子氢和臭氧反应的深入研究，其中所有可能的羟基新生产物状态族被检测和量化。他的测量减少了中间层能量收支模型中必要输入参数的不确定性。

The reaction between atomic hydrogen and ozone in the upper mesosphere produces vibrationally excited hydroxyl, resulting in two important consequences. First, excited hydroxyl radiative decay produces the hydroxyl nighttime airglow layer, used extensively in proving the hydroxyl chemical production rate and in studying wave phenomena. Second, the collisional relaxation of highly excited hydroxyl is key to nocturnal heating in the upper mesosphere. Mesospheric energy budget models rely on accurate understanding of hydroxyl product distribution and its collisional and radiative decay. Despite the importance of this process, a significant fraction of the reaction exothermicity is not accounted for in existing measurements. Thus, the investigator is conducting an in-depth study of the atomic hydrogen and ozone reaction, where all possible hydroxyl nascent product state populations are detected and quantified. His measurements are reducing the uncertainly in necessary input parameters to mesospheric energy budget models.