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John Caldwell大学南加州Drs。 WU，Judge和Caldwell将继续进行一项研究计划，以实验室测量依赖温度的光吸吸收横截面在行星大气，彗星，星云和星际云的研究中，感兴趣的分子。 具体而言，它们将测量1）4pg的温度依赖性横截面，基础的禁止过渡和一氧化碳的伪核横截面； 2）甲烷，二氧化碳和水的光吸收横截面极为小； 3）在最丰富的大气分子（例如氢，氮，二氧化碳和甲烷）存在下，压力影响吸收分子； 4）苯和硫化氢。