Abstract
Oscillator strengths f3/2n and f1/2 n for the principal series of rubidium are calculated using relativistic wave functions obtained by means of the relativistic parametric-potential method. Three different approaches are used pointing out that the separation between relativistic and correlation effects is not unique and somewhat arbitrary. The calculations were carried out up to the principal quantum number n = 80 showing that the ratio Rn = f3/2n / f1/2 n increases rapidly with n towards a limiting value, a result in agreement with a recent experiment on highly excited Rydberg states.
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