Measurement of Kinetic Energy Distributions of Photofragments of Atmospheric Molecules

大气分子光碎片动能分布的测量

• 批准号: 8722482
• 负责人: Chung-Yung Wu
• 金额: $ 5.9万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-15 至 1989-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8722482&HistoricalAwards=false
• 关键词: Measurement; Kinetic; Energy; Distributions; Photofragments

The bombardment of the upper layers of the earth's atmosphere by ultraviolet and X-Ray photons from the sun breaks apart molecules there such as N2, O2, and CO2 into atomic fragments (photodissociation). Some of these fragments lose or gain an electron in the process and emerge electrically charged (dissociative ionization), and they all possess varying amounts of kinetic energy that affect their subsequent chemical reactions. In some cases the speed of the atom is sufficient to allow it to escape from the earth. This award is for laboratory measurements of the energies and other details of the products of such molecular disintegration, with the aim of improving our understanding of the chemistry of the upper atmosphere.

紫外线和太阳的X射线光子轰击地球大气层的上层会破坏那里的分子，例如N2，O2和CO2，分成原子片段（光解离）。 这些片段中的一些在此过程中损失或获得电子，并出现电动电离（解离电离），并且它们都具有影响其随后的化学反应的不同数量的动能。 在某些情况下，原子的速度足以使其从地球逃脱。 该奖项用于实验室测量这种分子崩解的能量和其他细节，目的是提高我们对上层大气化学的理解。