Low-energy electron attachment to ${\text{NO}}_2$: absolute cross sections

Abstract

Resonances from electron attachment to ${\text{NO}}_2$ have been identified in the total electron scattering cross sections (TCS) measured with a magnetically confined electron transmission apparatus. The corresponding absolute electron attachment cross sections have been derived from the TCS values through a self-consistent scattering channel deconvolution process. The positions of some of these resonances are consistent with previous elastic scattering calculations and dissociative electron attachment experiments. However, both the observed positions and the magnitude of the present resonance cross sections are in contradiction with the available recommended TCS values thus suggesting that electron scattering cross section databases need to be updated. Keywords: electron scattering resonances, negative ion formation, electron attachment cross sections

18 pages, 2 figures and 2 tables. Published in Chemical Physics Letters