Theoretical Investigation of Rydberg Energy, Quantum Defect, Radius and Radiative Lifetime of Be III

Abstract

The Rydberg Series and Radiative transitions in Beryllium ions have been investigated using the single-electron approximation i.e. Weakest bound electron potential model theory (WBEPMT) and quantum defect theory. The Martin formula was applied to calculate energies and quantum defects of Rydberg levels of Be III up to n = 50. The lifetime of 157 levels have been calculated using transition probabilities of the radiative transitions. The necessary data was taken from NIST database. The radii of Ruberg levels have also been calculated.