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: 9800564
• 负责人: Chung-Yung Wu
• 金额: $ 21.02万
• 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: 1998
• 资助国家: 美国
• 起止时间: 1998-05-15 至 2001-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9800564&HistoricalAwards=false
• 关键词: Proposed; Measurements; Photoabsorption; Cross; Sections

Chung-Yung Wu Darrell Judge John Caldwell University of Southern California Drs. Wu, Judge, and Caldwell will continue a research program of laboratory measurements of temperature dependent photoabsorption cross sections of molecules of interest in the study of planetary atmospheres, comets, nebulae, and interstellar clouds. Specifically they will measure temperature dependent cross sections of 1) the 4PG, the underlying forbidden transitions and the pseudo-continuum cross sections of carbon monoxide; 2) the extremely small photoabsorption cross sections of methane, carbon dioxide, and water near their respective absorption onsets; 3) the pressure effects on the absorbing molecule in the presence of the most abundant atmospheric molecules such as hydrogen, nitrogen, carbon dioxide, and methane; and 4) benzene and hydrogen sulfide.

Chung-Yung Wu Darrell 法官 南加州大学 约翰·考德威尔 博士吴、法官和考德威尔将继续一项研究计划，对行星大气、彗星、星云和星际云研究中感兴趣的分子的温度依赖性光吸收截面进行实验室测量。 具体来说，他们将测量 1) 4PG 的温度相关截面、一氧化碳的潜在禁戒跃迁和伪连续截面； 2）甲烷、二氧化碳和水在各自吸收起始点附近的光吸收截面极小； 3）在存在最丰富的大气分子（例如氢气、氮气、二氧化碳和甲烷）的情况下，压力对吸收分子的影响； 4)苯和硫化氢。