High lying energy positions of doubly (2pns) 1,3P° and (2pnd) 1,3P° excited states of the beryllium atom

The Screening Constant by Unit Nuclear Charge (SCUNC) method is used to study (2pns) 1,3P° and (2pnd) 1,3P° autoionizing states of the beryllium atom. Energy positions are reported up to n=20. In addition, resonance widths of the (2pns) 1P° states also presented. The current results compared very well to available theoretical and experimental literature values up to n=15. The accurate data presented in this work may be of interest for future experimental and theoretical studies in the photoabsorption spectrum of Be.

► Accurate energy positions of (2pns) 1,3P° and (2pnd) 1,3P° (n=3–20) autoionizing states of Be atoms. ► Currently results compared very well to theoretical and experimental literature values up to n=15. ► Presently data may be of interest for future experimental and theoretical studies in the photoabsorption spectrum of Be.