An Investigation of the Excitation of Aeronomically Important Species by Electron Impact and Dissociative Recombination

电子碰撞和解离重组激发航空重要物质的研究

• 批准号: 8720408
• 负责人: Edward Zipf
• 金额: $ 29.9万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-05-01 至 1992-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8720408&HistoricalAwards=false
• 关键词: Investigation; Excitation; Aeronomically; Important; Species

The analysis of the light emitted by atoms and molecules in the upper atmosphere leads to a knowledge of the chemical and physical reactions taking place there as energy in the form of solar ultraviolet radiation is absorbed during the day, and in the form of high speed streams of electrons and positively charged atoms is absorbed at high latitudes at night. To relate the optical observations to specific chemical reactions and to infer upper atmosphere temperature and composition and energy inputs, it is necessary to perform controlled laboratory experiments to determine the parameters that need to be used in numerical models of the processes. This award is for laboratory work to provide such parameters for reactions involving nitrogen and oxygen atoms and molecules, and to help understand the production of nitric oxide in aurorae, that is subsequently transported downwards into the middle atmosphere and affects the concentration of ozone there.

对高层大气中原子和分子发出的光的分析使我们了解在那里发生的化学和物理反应：白天以太阳紫外线辐射的形式被吸收，晚上以高速电子流和带正电的原子的形式被高纬度地区吸收。为了将光学观测与特定的化学反应联系起来，并推断上层大气的温度、成分和能量输入，有必要进行受控的实验室实验，以确定需要用于这些过程的数值模型的参数。该奖项是为了奖励实验室工作，为涉及氮和氧原子和分子的反应提供这些参数，并帮助了解极光中一氧化氮的产生，一氧化氮随后被向下输送到大气中，并影响那里的臭氧浓度。