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

南加州大学约翰考德威尔法官 吴博士，法官，和考德威尔将继续在行星大气，彗星，星云和星际云的研究感兴趣的分子的温度依赖的光吸收截面的实验室测量的研究计划。 具体地说，他们将测量1）4PG的温度依赖性截面，潜在的禁戒跃迁和一氧化碳的伪连续截面; 2）甲烷，二氧化碳和水在各自的吸收起始点附近的极小的光吸收截面; 3）在存在最丰富的大气分子如氢、氮、二氧化碳和甲烷的情况下，压力对吸收分子的影响;和4）苯和硫化氢。

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.