Non-relativistic application of the finite basis sets constructed from B Splines

Conference · Thu Jun 15 04:00:00 EDT 1989 · AIP Conference Proceedings (American Institute of Physics); (USA)

OSTI ID:6916958

Chang, T N ^[1]

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1. Department of Physics, University of Southern California, Los Angeles, CA 90089-0484 (USA)

We present a simple extension of the use of finite basis sets constructed from B Splines to the non-relativistic configuration interaction (CI) and perturbation calculations following the recent relativistic many-body perturbation application by Johnson {ital et} {ital al} (Phys. Rev. A {bold 37}, 307 (1988)). With the {ital continuum} contribution from the multi-electron interactions explicitly included in the B-Spline basis, the numerical accuracy of our non-relativistic calculations is improved substantially. A combined application of perturbation and CI calculation to the fine structure level-splittings of He 1s4f multiplets will be presented first. The effectiveness of the finite B-Spline basis set is further demonstrated in its applications to the determination of the energy levels and the oscillator strengths of Be atom in a simple CI calculation.

• OSTI ID: 6916958
• Report Number(s): CONF-8807162--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (USA) Journal Volume: 189:1
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ALKALINE EARTH METALS
BERYLLIUM
ELEMENTS
ENERGY LEVELS
FLUIDS
GASES
HELIUM
MANY-BODY PROBLEM
MATRIX ELEMENTS
METALS
NONMETALS
OSCILLATOR STRENGTHS
PERTURBATION THEORY
POTENTIALS
RARE GASES