Comprehensive Measurement of Hydroxyl Product State Distribution from Hydrogen and Ozone

氢原子和臭氧在中间层上部的反应产生振动激发的羟基，导致两个重要的后果。 首先，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产率和研究波动现象。 第二，高度兴奋的羟基的碰撞弛豫是夜间在中间层上部加热的关键。 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。 尽管这一过程的重要性，一个显着的分数的反应不可逆性是不占现有的测量。 因此，研究人员正在对原子氢和臭氧反应进行深入研究，其中所有可能的羟基新生产物状态群体都被检测和量化。 他的测量正在减少中间层能量收支模型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.