Dynamic polarizability of two-electron ions under Debye screening

Abstract

The effect of plasma screening on the dynamic dipole polarizability (DPP) of two-electron ions Be 21 , B 31 , and C 41 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 1 , Be 21 , B 31 , C 41 . 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.

Polarizability of negatively charged helium‐like ions interacting with Coulomb and screened Coulomb potentials

“…Due to experimental advancements in positron trapping and accumulation technology, it is of great interest to study several properties of Ps – . The static and dynamic dipole polarizabilities of the Ps – were reported in the literature besides several structural properties . The static quadrupole polarizability (SQP) of Ps – is also reported by Bhatia and Drachman …”

“…[1][2][3][4][5][6][7] In this work, we aim mainly to present the mass dependence of the polarizability of two-electron negative ions interacting with Coulomb and screened Coulomb potentials (SCP), and so we have mainly listed some references related to polarizability calculations. The study of atomic and ionic polarizabilities (both static and dynamic) plays important role in a number of applications in physical sciences [1][2][3][4][5][6][8][9][10][11][12][13] . Several studies have been performed so far to estimate static and dynamic polarizabilities of helium atom [3][4][5][6][14][15][16][17][18][19][20][21][22][23][24] and helium-like positive ions; [6,12,[24][25][26][27][28] and for two-electron negative ions, there are only a few theoretical studies have been performed.…”

“…The study of atomic and ionic polarizabilities (both static and dynamic) plays important role in a number of applications in physical sciences [1][2][3][4][5][6][8][9][10][11][12][13] . Several studies have been performed so far to estimate static and dynamic polarizabilities of helium atom [3][4][5][6][14][15][16][17][18][19][20][21][22][23][24] and helium-like positive ions; [6,12,[24][25][26][27][28] and for two-electron negative ions, there are only a few theoretical studies have been performed. [2,13,21,[29][30][31] The static dipole polarizabilities (SDP) of 1 H -, 1 H -, and Psare reported by Kar and Ho.…”

“…reported in the literature [12,28] besides several structural properties. [21,[52][53][54] The static quadrupole polarizability (SQP) of Psis also reported by Bhatia and Drachman.…”

“…[55][56][57][58][59][60][61][62][63][64] In the recent years, several studies have been performed to investigate the effect of SCP on the polarizability of atoms or ions. [3][4][5][6][10][11][12][13]20,[65][66][67][68] The complete SCP in a general form can be written as [55,59] VðrÞ5…”