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

吴博士将继续他在行星大气、彗星、星云和星际云研究中感兴趣的分子的低温吸收截面的实验室测量。测量是通过光谱的紫外区域在近可见范围内进行的。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横截面对于理解地球大气和其他行星大气中光化学过程的动力学至关重要。吴博士的测量涉及的光谱范围内有大量的太阳辐射，它们与解释行星大气中发生的由紫外线辐射刺激的现象极其相关。

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.