Abstract
We have measured the total electron detachment cross sections of the negative ions C, CH, C, and CH incident on molecular nitrogen in the velocity range 0.22–0.56 a.u. The data were measured with reliable normalization and, particularly in the critical case of the C projectile, the absence of beam contamination due to long-lived metastable states. Comparison of all measurements of cross sections with experimental data for other projectiles shows a common velocity dependence with a maximum near 0.4 a.u. This behavior suggests a connection between the anion-N electron-loss collision dynamics and that of the shape-resonance process dominant in low-velocity electron-N total electron scattering.
1 More- Received 8 March 2013
DOI:https://doi.org/10.1103/PhysRevA.87.062704
©2013 American Physical Society