Quantum defect orbital study of electronic transitions in Rydberg molecules: ammonium and fluoronium radicals

Abstract

Abstract Oscillator strengths and Einstein emission coefficients for NH 4 and H 2 F Rydberg radicals have been calculated using the quantum defect orbital method. An estimate of the accuracy of this approach has been obtained by a comparison of the results with the data derived from more sophisticated ab initio methods. In several cases, in particular for H 2 F molecule, predictions of unknown transition probabilities have been given. The method proved to be a reliable and useful tool to estimate transition probabilities between molecular Rydberg states.