Electronic structure and fluorescence spectra of HeO+ cation.

A.N.Petrov¹ and A.I.Panin^2
1PNPI RAS, St.Petesburg, Gatchina, 188350 Russia
²Research Inst. of Chemistry, St.Petersburg State University, St.Petersburg, 198904 Russia

Quantum-mechanical calculations of the potential curves of the HeO⁺ ion are performed wich correlate with four lower dissociation limits and indicate the excimer type of the ion. The transition dipole moments of the 2²S ^-®1²S ^- and 2⁴S ^-®1⁴S ^- transitions are calculated. The energies and radiative lifitimes of vibrational levels are determined and structural and spectroscopic constants of the states 1²S ^-, 2²S ^-, 2⁴S ^-, and 2⁴S ^- are calculated. The fluorescence spectrum corresponding to the 2²S ^-®1²S ^- and 2⁴S ^-®1⁴S ^- transitions is also calculated. The possibility of lasing at these transitions is discussed.