The 4p6 core excitation of Rb2 by low energy electron impact

Abstract

The excitation cross section for unassigned dipole forbidden autoionizing state in Rb2 molecules was measured in an impact energy range from the excitation threshold at 15.55±0.07 eV up to 17.5 eV. The cross section possesses a resonance shape with the maximum value of 1.0 ± 0.5 × 10−14 cm2 at 0.4 eV above the excitation threshold.