High Lying Precise Resonance Energies from Photoionization Studies of Se³⁺ and Rb⁺ Ions Using the Screening Constant per Unit Nuclear Charge Formalism

Abstract

Resonance energies of the 4s4p (3P0,1)np, 4s4p (3P2)np (2P3/2, 4D7/2, 4D5/2) and 4s4p (1P1)np (2D3/2, 2D5/2) Rydberg series of Se3+ ions along with resonance energies of the 4s24p5 (2P°1/2) nd1P°1 and 4s4p6 (2S1/2) np 1P°1 series of Rb+ ions are reported. Calculations are done in the framework of the screening constant per unit nuclear charge (SCUNC) formalism. The fine structure splitting of the 4s4p (3P2)np (2P3/2, 4D7/2, 4D5/2) series from n = 10 to n = 27 and for the 4s4p (1P1)np (2D3/2, 2D5/2) series from n = 8 to 11 are resolved in this paper. Very good agreements are obtained between the present calculations and the available experimental and theoretical literature data. The present predicted data up to n = 40 may be of great importance for the atomic physics community in connection with the understanding of the chemical evolution of the Se and Rb elements in the Universe.

Keywords

• photoionization
• resonance energy
• Rydberg series
• fine structure splitting
• SCUNC