Rotational characterization of the [formula omitted](5s6s 3S1) Rydberg state of CdNe van der Waals complex via selective J-excitation in OODR process

Abstract

Spectroscopic rotational characterization of two υ′=0 and υ′=1 vibrational components of the E3Σ1+(5s6s3S1) Rydberg state of CdNe van der Waals (vdW) complex has been performed using specially designed approach. In optical–optical double resonance (OODR) process, a selective J-excitation has been realized using the E3Σ1+←A3Π0+(5s5p3P1) transition, with υ″=0 level of the A3Π0+ state as an intermediate in the excitation from υ=0 of the X1Σ0+(5s21S0) state. As a result, Bυ=0′ and Bυ=1′ rotational constants have been determined as well as the Re′ equilibrium internuclear separation in the E3Σ1+ - state potential well.