Differential Excitation Cross Section Measurements of Ozone by Electron Impact: A Search for Ozone Excited Electronic States

通过电子撞击测量臭氧的差动激发截面：寻找臭氧激发的电子态

• 批准号: 9415678
• 负责人: Tong-Wha Shyn
• 金额: $ 10.69万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-02-15 至 1997-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9415678&HistoricalAwards=false
• 关键词: Differential; Excitation; Cross; Section; Measurements

This laboratory project will measure the differential cross sections of ozone (O3) for the energy loss of 0.2 eV to 1.5 eV region by electron impact in order to identify any states which exist in this energy region. The differential cross sections for the energy loss in this important low energy region will be measured by utilizing a supersonic beam to reduce the rotational and vibrational temperatures and minimize spectral congestion. A crossed-beam method will be used to obtain data for laboratory angles from 6 to 160 . The energy loss spectra and the residual mode spectra will be decomposed by a simulated annealing computer technique in order to obtain the vertical energies and slopes of potential surfaces in the O3 Franck-Condon region for each excited electronic state which contributes to the bands.

该实验室项目将测量臭氧（O3）在0.2 eV至1.5 eV能量损失范围内的电子碰撞微分截面，以确定该能量范围内存在的任何状态。 在这个重要的低能量区域的能量损失的微分截面将通过利用超声束来测量，以降低旋转和振动温度，并最大限度地减少光谱拥挤。 将使用交叉光束法获得实验室角度从6 °到160 °的数据。 能量损失谱和剩余模谱将通过模拟退火计算机技术进行分解，以获得每个激发电子态在O3 Franck-Condon区的势能面的垂直能量和斜率。