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

本实验室项目将测量0.2 eV至1.5 eV区域的臭氧（O3）在电子冲击下能量损失的微分截面，以确定该能量区域内存在的任何状态。在这个重要的低能区域，能量损失的微分截面将通过利用超音速光束来测量，以降低旋转和振动温度，并最小化频谱堵塞。交叉光束法将用于获得实验室角度从6到160的数据。利用计算机模拟退火技术对能量损失谱和剩余模谱进行分解，得到各激发态在O3 Franck-Condon区的垂直能量和势面斜率。

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.