RUI: Very High Resolution Photoabsorption Cross Sections in the Ultraviolet Vacuum

该奖项支持继续研究的计划， 真空紫外高分辨分光计装置. 美国国家标准研究所的SURF II储存环 技术（NIST）。 经过两年多的紧张工作 根据以前的赠款，由区大学 哥伦比亚大学的教师、学生和NIST的工作人员， 光谱仪设施已准备好用于其预期目的， 测量Aeronomy中感兴趣的有用EUV横截面： 强度比两年前增加了120倍， 分辨率从0.014 A提高到0.009 A。 实验 将进行测量N2中的绝对吸收。 高 83.4 nm附近的分辨率测量将提供新的信息 需要精确地模拟太阳EUV辐射的相互作用 与地球高层大气的联系

This award supports a program of continued studies using the vacuum ultraviolet high-resolution spectrometer facility (HRSF) at the SURF II storage ring of the National Institute for Standards and Technology (NIST). After more than two years of intensive work under the previous grant, by the University of the District of Columbia's faculty and students and NIST personnel, the spectrometer facility is ready for its intended purpose of measuring useful EUV cross-sections of interest in Aeronomy: intensity is up by a factor of 120 over two years ago and the resolution has improved from 0.014 A to , 0.009 A. Experiments will be performed to measure absolute absorption in N2. The high resolution measurements near 83.4 nm will provide new information needed to accurately model the interaction of solar EUV radiation with the terrestrial upper atmosphere.