Proposed Measurements of Photoabsorption Cross Sections of Solar System and Cosmic Gases Under In-Situ Conditions

拟议的原位条件下太阳系和宇宙气体光吸收截面的测量

• 批准号: 8919862
• 负责人: Chung-Yung Wu
• 金额: $ 18万
• 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: 1990
• 资助国家: 美国
• 起止时间: 1990-03-15 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8919862&HistoricalAwards=false
• 关键词: Proposed; Measurements; Photoabsorption; Cross; Sections

Dr. Wu will continue his laboratory measurements of low temperature absorption cross sections of molecules of interest in the study of planetary atmospheres, comets, nebulae, and interstellar clouds. The measurements are made in the near visible through the ultraviolet region of the spectrum. The pressure, temperature, and relative abundance of the sample of gas of interest will be chosen to simulate realistic planetary conditions. Accurate knowledge of photo-cross sections of relevant molecular systems is essential for understanding the dynamics of photochemical processes in our atmosphere and those of the other planets. Dr. Wu's measurements deal with the spectral range where there is plenty of radiation from the Sun, and they are extremely relevant for the interpretation of phenomena occurring in planetary atmospheres that are stimulated by ultraviolet radiation.

吴博士将继续在实验室测量行星大气、彗星、星云和星际云研究中感兴趣的分子的低温吸收截面。 测量是在近可见光到光谱的紫外区域进行的。 将选择感兴趣的气体样本的压力、温度和相对丰度来模拟现实的行星条件。 准确了解相关分子系统的光截面对于了解我们大气层和其他行星大气层中光化学过程的动力学至关重要。 吴博士的测量涉及太阳辐射充足的光谱范围，它们对于解释受紫外线辐射刺激的行星大气中发生的现象极为相关。