Excited levels 1sn, n-1 of the two-electron atom
Journal Article
·
· Am. J. Phys.; (United States)
Closed formulas for the Coulomb and exchange integrals in the excited states 1snl, l=n-1, of the two-electron atom are applied to the computation of the ionization energy of the singlet and tripet 1s2p states from He I up to O VII and to singlet and triplet 1s3d and 1s4f states of He I and Li II. Two methods are compared: (a) the use of first-order perturbation theory considering the mutual electrrostatic repulsion e/sup 2//r/sub 12/ as a small perturbation and (b) imposing as solution of the Schroedinger equation a symmetrized product of a Z and a screened Z-1 hydrogenic wave functions. Computed and experimental values of the ionization energy and of the singlet-triplet interval are compared and the evolution of agreement with increasing Z and n is discussed.
- Research Organization:
- Departamento de Fisica Fundamental, Universidad Autonoma de Barcelona, Bellaterra, Barcelona, Spain
- OSTI ID:
- 5827975
- Journal Information:
- Am. J. Phys.; (United States), Journal Name: Am. J. Phys.; (United States) Vol. 47:9; ISSN AJPIA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC IONS
BERYLLIUM IONS
BORON IONS
CARBON IONS
CHARGED PARTICLES
CRYOGENIC FLUIDS
DIFFERENTIAL EQUATIONS
ELEMENTS
ENERGY LEVELS
EQUATIONS
EXCITED STATES
FLUIDS
FUNCTIONS
HAMILTONIANS
HELIUM
INTEGRALS
IONIZATION
IONIZATION POTENTIAL
IONS
LITHIUM IONS
MATHEMATICAL OPERATORS
NITROGEN IONS
NONMETALS
OXYGEN IONS
PERTURBATION THEORY
QUANTUM OPERATORS
RARE GASES
SCHROEDINGER EQUATION
WAVE EQUATIONS
WAVE FUNCTIONS
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC IONS
BERYLLIUM IONS
BORON IONS
CARBON IONS
CHARGED PARTICLES
CRYOGENIC FLUIDS
DIFFERENTIAL EQUATIONS
ELEMENTS
ENERGY LEVELS
EQUATIONS
EXCITED STATES
FLUIDS
FUNCTIONS
HAMILTONIANS
HELIUM
INTEGRALS
IONIZATION
IONIZATION POTENTIAL
IONS
LITHIUM IONS
MATHEMATICAL OPERATORS
NITROGEN IONS
NONMETALS
OXYGEN IONS
PERTURBATION THEORY
QUANTUM OPERATORS
RARE GASES
SCHROEDINGER EQUATION
WAVE EQUATIONS
WAVE FUNCTIONS