Near-threshold excitation of the b ³Σ⁺ state of carbon-monoxide by electron impact

Abstract

Relative differential cross sections, at 0°, for electron-impact excitation of the b 3Σ+ state of carbon monoxide have been measured in the near-threshold energy region. A high-resolution crossed-beam double trochoidal electron spectrometer is used and the cross sections are measured directly, by detection of inelastically scattered electrons. Absolute differential cross sections at 0° are obtained, after normalization, in the energy region from threshold to 15 eV, for the first time. Integral cross sections are obtained by using relative angular distributions from previous measurements. The results obtained are compared with other available data.