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

这个实验室项目将测量臭氧(O3)的不同截面，以确定该能量区域中存在的任何状态。在这一重要的低能量区域，能量损失的微分截面将通过利用超音速波束来测量，以降低旋转和振动温度，并最大限度地减少光谱拥堵。将使用交叉波束方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用模拟退火法计算机技术进行分解，以获得对能带有贡献的每个激发态在O_3 Franck-Condon区势能面的垂直能量和斜率。

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.