Dynamic Polarizability of Two-Electron Ions under Debye Screening

摘要

The effect of plasma screening on the dynamic dipole polarizability (DPP) of two-electron ions Be2+, Be3+, and C4+ has been investigated using highly correlated exponential wave functions within the framework of pseudostate summation technique and Debye screening concept. Plasma-screening effect on the oscillator strengths (OS) of the ultraviolet and visible series has also been investigated for the systems Li+, Be2+, Be3+, and C4+. The DPP are reported as functions of screening parameters. The OS for S-P transitions are also reported for various screening parameters. The OS and dynamic polarizability show interesting behavior with increasing screening strength and nuclear charge. (C) 2015 Wiley Periodicals, Inc.