Electron transmission studies of decay channels of molecular resonances

Publisher Website
Google Scholar
Abstract
Measurements are reported of transmission of energy monochromated electrons of energy 0.1-4eV through oxygen, nitrous oxide, nitric oxide, nitrogen dioxide, carbon dioxide, and benzene. Energy loss spectra are measured, and the zero angle scattering functions for excitation of different vibrational levels are reported. The functions show oscillatory structure due to temporary negative ion states. The function for O2 is analysed in terms of the compound state theory, yielding O2-2 pi g nuclear separation re=1.39AA in disagreement with the photodetachment value re=1.34+or-0.01AA (Celotta et al). The causes of this discrepancy are probably significant. The transmission functions for zero energy loss are treated by Fourier analysis, which yields the approximate vibrational energies of the temporary negative ion states of O2-, NO-, NO2-, C6H6-. It is possible that a second state of NO2- contributes the scattering at energies above 1.1eV.

This publication has 22 references indexed in Scilit: