https://doi.org/10.1140/epjd/e2003-00269-3
Asymptotic description of the Rydberg states with L > 0 in a two-electron atom
Institute of Spectroscopy, Academy of Sciences of Russia,
Troitsk 142092, Russia
Corresponding author: a iivanov@pub.iams.sinica.edu.tw
Received:
22
May
2003
Published online:
26
August
2003
The energies of the levels belonging to a Rydberg
series 
P in a two electron atom
have been determined by means of the
quantum defect theory for a two-electron atom with
nuclear charge Z considered as a parameter.
Comparison with configuration
interaction calculations suggests that the analytic
quantum defect expression for the energy levels may be
in fact asymptotically exact as 
,
providing an analytic
description of the disappearance of the Rydberg states
with L>0 when Z approaches the value of 1.
PACS: 31.10.+z – Theory of electronic structure, electronic transitions, and chemical binding / 31.15.-p – Calculations and mathematical techniques in atomic and molecular physics (excluding electron correlation calculations)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
