Record Details

Boundary-condition-determined wave function for the ground state of helium and isoelectronic ions

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Boundary-condition-determined wave function for the ground state of helium and isoelectronic ions
 
Creator KLEINEKATHOFER, U
PATIL, SH
TANG, KT
TOENNIES, JP
 
Subject 3-body atomic wavefunctions
analytic expansions
coordinate systems
variational calculations
2-electron systems
fock expansion
energies
series
terms
 
Description A simple nonvariational wave function for two electron atoms is described. The radial part is derived from the asymptotic one-electron wave functions that are modified to account for the proper core boundary conditions. The electron-electron correlation is described by an ansatz which has the correct behavior for r(12)-->0 and r(12)-->infinity. The additional parameter in this ansatz is calculated from a perturbation calculation. This wave function yields ground-state energies for the heliumlike atoms with Z=1 (H-) to 10 (Ne8+) within 0.0021-0.0068E(h) of the exact energies, which is significantly better than obtained with previous models. We also calculated [r(2n)] and multipolar polarizabilities and performed other tests on this wave function.
 
Publisher AMERICAN PHYSICAL SOC
 
Date 2011-07-17T11:32:12Z
2011-12-26T12:50:16Z
2011-12-27T05:36:28Z
2011-07-17T11:32:12Z
2011-12-26T12:50:16Z
2011-12-27T05:36:28Z
1996
 
Type Article
 
Identifier PHYSICAL REVIEW A, 54(4), 2840-2849
1050-2947
http://dx.doi.org/10.1103/PhysRevA.54.2840
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4716
http://hdl.handle.net/10054/4716
 
Language en