The recurrence spectra of Rydberg HeH+ molecule ion in a magnetic field

Abstract

Making use of the molecular closed-orbit theory and a new model potential for the Rydberg molecule, we calculated the recurrence spectra of HeH(+) molecule ion in a magnetic field for different quantum defects. The Fourier transformed spectra of HeH(+) molecule ion have allowed direct comparison between peaks in the spectra and the scaled action values of closed orbits of the excited electron in the external fields. We find that the spectral modulations can be analyzed in terms of the scattering of the excited electron on the molecular core. Unlike the case of the Rydberg atom where the elastic scattering is predominant, modulations produced by inelastic scattering are also vital to the photoabsorption spectrum of Rydberg molecule. Our results are in good agreement with the quantum results, which suggest that our method is correct.