Speaker
Description
The recent discovery of the NS+ cation in the interstellar medium1 triggered the interest in the study of its collision with electrons. In this complex process, the electron can be captured into NS Rydberg-bound states predissociated by Feshbach resonances of this latter molecule. These both types of states have been calculated within the Born-Oppenheimer approximation using a variationa ab-initio method based on the the R-matrix theory. The electronically-excited Rydberg states form series converging either to the ground or to the excited states of the cation. We will focus on the Rydberg series of 2Σ+ symmetry converging to the ground X1Σ+ state of the ion, conveniently characterized by their quantum defects or effective quantum numbers.
