Quantum mechanical study of optical emission spectra of rydberg-excited H<inf>3</inf> and its isotopomers

Abstract

Optical emission spectra of Rydberg-excited H3, D3, H2D, and D2H, in the range 200–400 nm, are investigated theoretically and compared with the experimental findings of Bruckmeier et al. [Phys. Rev. Lett. 72, 2550 (1994)]. The time-dependent wave packet method combined with the vibronic coupling theory for (E × ε) Jahn-Teller systems is utilized in order to calculate the corresponding Franck-Condon emission profiles from the upper n = 3 electronic state to the degenerate (2p)1E′ ground electronic manifold of those species. We obtain bimodal spectra with two maxima 9600cm−1 apart in good agreement with the experimental result. © 1998 American Physical Society.