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

该奖项支持在美国国家标准与技术研究所（NIST）的SURF II存储环上使用真空紫外高分辨率光谱仪设备（HRSF）的持续研究项目。在之前的资助下，经过两年多的密集工作，由哥伦比亚特区大学的师生和NIST的工作人员，光谱仪设备已经准备好用于测量航空领域感兴趣的有用的EUV横截面。强度比两年前提高了120倍，分辨率从0.014 a提高到0.009 a。将进行实验来测量氮气中的绝对吸收。83.4 nm附近的高分辨率测量将提供准确模拟太阳EUV辐射与地面高层大气相互作用所需的新信息。

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.