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.

Wu博士将继续他的实验室测量在行星大气，彗星，星云和星际云的研究中，对有兴趣的分子的低温吸收横截面进行了实验室测量。 测量值是通过光谱的紫外线区域近可见的。 感兴趣的气体样本的压力，温度和相对丰度将选择模拟逼真的行星条件。 对相关分子系统的照片交叉部分的准确了解对于理解我们大气和其他行星的光化学过程的动力学至关重要。 Wu博士的测量值涉及光谱范围，那里有太阳有很多辐射，它们与解释在紫外线辐射刺激的行星大气中发生的现象非常相关。