Temperature-Dependent Cross Section Measurements: Absorption and Fluorescence Produced Through Photoexcitation of N2 and O2

温度相关的横截面测量：通过 N2 和 O2 光激发产生的吸收和荧光

• 批准号: 0096761
• 负责人: Chung-Yung Wu
• 金额: $ 27.61万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-02-15 至 2004-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0096761&HistoricalAwards=false
• 关键词: Temperature; Dependent; Cross; Section; Measurements

This award supports the continuation of measurements of high-resolution temperature-dependent photoabsorption cross sections of N2 and O2 in the spectral regions near strong dayglow emissions of N+ and O+ as well as a major spectroscopic band system of N2 near 100 nm. The range of temperatures that would be explored in these measurements is from room temperature to ~900 K. Also included in the award is support for the measurements of temperature-dependent fluorescence cross sections for the production of N and N+, O and O+ emissions through photodissociative excitation and dissociative photoionization excitation of N2 and O2, respectively. The cross section measurements would be obtained at the Japanese Photon Factory, and the fluorescence measurements would be obtained with a new position-sensitive detector at the Advanced Light Source facility at the Lawrence Berkeley Laboratory. These laboratory results are important for the improved modeling of the dayglow emission production and solar radiation transmissions through planetary atmospheres.

该奖项支持了在靠近N+和O+强辉光发射光谱区域的N2和O2的高分辨率温度依赖光吸收截面的持续测量，以及近100 nm的N2主要光谱波段系统。在这些测量中要探索的温度范围是从室温到~ 900k。该奖项还包括支持测量温度依赖的荧光横截面，分别通过N2和O2的光解离激发和解离光电离激发产生N和N+， O和O+发射。截面测量将在日本光子工厂获得，荧光测量将在劳伦斯伯克利实验室的先进光源设施使用新的位置敏感探测器获得。这些实验结果对于改进日光发射产生和太阳辐射通过行星大气传输的模型具有重要意义。