Abstract

An extrapolation method based on a screening approximation, applied to available initial values of polarizability for low stages of ionization, is used to obtain dipole and quadrupole polarizabilities for more highly ionized members of many isoelectronic sequences. It is suggested that the derived screening constants xL and limiting ratios FL may have significant physical meaning, especially the latter which may have an interpretation in terms of hydrogenic polarizabilities.

© 1979 Optical Society of America

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