Portal de Periódicos da CAPES

Energy resonances and widths of the (2pns) 1P° and (2pnd) 1P° Rydberg series of Be-like ions

2013; IOP Publishing; Volume: 88; Issue: 3 Linguagem: Inglês

10.1088/0031-8949/88/03/035302

1402-4896

Ibrahima Sakho, Modou Tine, Moussa Dieng, M. Sow, Moustapha Faye, B. Diop, Mallé Gueye, M. Biaye, A. Wagué,

Laser-induced spectroscopy and plasma

We report accurate photoionization calculations of resonance energies and widths of the 2pns 1P° and 2pnd 1P° Rydberg series (n = 4–25) of the Be-like ions (Z = 8–18). Calculations are performed using the screening constant by unit nuclear charge (SCUNC) method. The results are analyzed in the framework of the standard quantum defect theory, as well as of the SCUNC-procedure, by evaluating the effective nuclear charge. The results for Na7+ to Ar14+ ions are believed to be the first theoretical data. Those for O4+, F5+ and Ne6+ ions compare well with the available theoretical results. The new data obtained may provide useful guidelines for future photoionization studies on Be-like ions with Z = 11–18.