Solar System Laboratory Aeronomy by Electron Impact with Emphasis on Terrestrial Processes

通过电子撞击进行太阳系实验室航空学研究，重点关注陆地过程

• 批准号: 9019970
• 负责人: Donald Shemansky
• 金额: $ 11.21万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-03-01 至 1992-02-01
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9019970&HistoricalAwards=false
• 关键词: Solar; System; Laboratory; Aeronomy; Electron

In order to understand the details of the way solar energy is transferred to and within the earth's atmosphere it is essential to have a good understanding of the fundamental properties of the various states of the atoms and molecules that exist at each level of the atmosphere. It is also important to develop means to accurately calibrate the instruments that measure the energetics directly in the atmosphere. This program combines laboratory measurements with advanced models of atomic and molecular species to provide basic data to advance research in upper atmospheric processes. Detailed models will be used to simulate the excited night or day upper atmosphere, with particular attention paid to the energy budget. Concurrently, laboratory measurements of the light emitted in a crossed beam collision processes will provide calibrated spectra over a large wavelength region to provide a primary reference data set for the simulations. Electron impact studies of the species N2, 02, NI, OI, HI, NO and ArI will be performed, and energy dependent collision strengths will be obtained through model analysis to allow the construction of collision models capable of producing results for a broad range of relevant conditions. H2 emission will be studied because it can provide accurate calibration of spaceflight and laboratory instrumentation. Also included will be the determination of dissociation and predissociation yields, absolute transition probability tables, and high resolution absorption properties for selected species.

为了了解太阳能在地球大气中传输和内部传输的细节，有必要对存在于大气每一层的原子和分子的各种状态的基本特性有一个很好的了解。发展精确校准直接测量大气中能量的仪器的方法也很重要。该计划将实验室测量与原子和分子物种的先进模型相结合，为推进高层大气过程的研究提供基础数据。详细的模型将用于模拟受激的夜间或白天高层大气，特别注意能量收支。同时，交叉光束碰撞过程中发射的光的实验室测量将提供大波长区域的校准光谱，为模拟提供主要参考数据集。将对N2、02、NI、OI、HI、NO和ArI进行电子冲击研究，并通过模型分析获得与能量相关的碰撞强度，从而建立能够在广泛的相关条件下产生结果的碰撞模型。研究氢气的发射，因为它可以为航天和实验室仪器提供精确的校准。还包括解离和预解离产率的测定，绝对跃迁概率表，以及选定物种的高分辨率吸收特性。