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.

来自太阳的紫外线和x射线光子对地球大气层上层的轰击将那里的分子，如N2、O2和CO2分解成原子碎片（光解作用）。这些碎片中的一些在过程中失去或获得一个电子，并带电（解离电离），它们都具有不同数量的动能，影响它们随后的化学反应。在某些情况下，原子的速度足以使它逃离地球。这个奖项是为了表彰在实验室中对这种分子分解产物的能量和其他细节进行的测量，目的是提高我们对高层大气化学的理解。