A Tunable Laser Based Monitor for Atmospheric HO2

本项目旨在研制一种能够利用可调谐红外半导体激光器直接测量鱼尾水HO2浓度的仪器。该仪器将使用一种新型的多程电池，它在最大化光程长度的同时最小化了电池体积，从而也减少了HO2停留时间和壁面损失。第一阶段的工作将集中在测试原型多程电池和选择监测HO2的最佳光谱区域。这项评估将部分基于将在第一阶段测量的HO2压力展宽系数。

This project is to develop an instrument capable of measuring the concentration of torpospehric HO2 directly using tunable infrared diode lasers. The proposed instrument would use a novel multipass cell which maximizes the optical path-length while minimizing the cell volume and therefore also the HO2 residence time and wall loss. The Phase I effort will focus on testing a prototype multipass cell and on choosing the best spectral region for monitoring HO2. This evaluation will be based, in part, on HO2 pressure broadening coefficients which will be measured in Phase I.