Relativistic configuration-interaction calculations for the {ital n}=2 states of lithiumlike ions

Journal Article · Sat Jul 01 04:00:00 EDT 1995 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.52.266· OSTI ID:76492

Chen, M H; Cheng, K T ^[1]; Johnson, W R; Sapirstein, J ^[2]

---

1. University of California, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
2. Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)

Term energies are determined for the {ital n}=2 states of lithiumlike ions with nuclear charges in the range 10{le}{ital Z}{le}92. These calculations are based on the relativistic no-pair Hamiltonian, which includes both the Coulomb and the retarded Breit interactions. Single-particle wave functions are expanded in a {ital B}-spline basis constructed from Dirac-Slater orbitals restricted to a finite cavity. The Hamiltonian matrix is evaluated and Davidson`s method is used to determine the lowest few eigenenergies and eigenfunctions for each angular symmetry. Quantum electrodynamic and mass polarization corrections are also calculated. Precise agreement between theory and experiment for the 2{ital s}-2{ital p} transition energies is found throughout the Periodic Table.

• Research Organization: Lawrence Livermore National Laboratory
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 76492
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 1 Vol. 52; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CONFIGURATION INTERACTION
COULOMB FIELD
EIGENFUNCTIONS
ENERGY LEVELS
MULTICHARGED IONS
QUANTUM ELECTRODYNAMICS
RELATIVITY THEORY
SLATER METHOD