Effects of relativity and configuration interaction on L -shell Auger and radiative decays of the doubly excited 3 l 3 l prime states of sodiumlike ions

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · Physical Review (Section) A: General Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevA.40.2365· OSTI ID:5508047

Chen, M H ^[1]

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1. High Temperature Physics Division, Lawrence Livermore National Laboratory, Livermore, California 94550 (US)

Auger and radiative transition energies and rates for the states from the 2{ital p}{sup 5}3l3l{prime} and 2{ital s}2{ital p}{sup 6}3l3l{prime} configurations of the Na-like ions have been calculated for 18 ions with atomic number 18{le}{ital Z}{le}92 using the multiconfiguration Dirac-Fock method. The {ital Z} dependence of the transition rates for a few selected states has been analyzed. Numerous irregularities are present in many transitions due to the level-crossing interaction. The effects of relativity and configuration interaction are simultaneously important for medium and heavy ions. These effects can sometimes change the rates for weak transitions by orders of magnitude. Strong configuration interaction between states from the 2{ital p}{sup 5}3p{sup 2} and 2{ital p}{sup 5}3s3d configurations has been found. Inclusion of the Breit interaction in calculations of the Auger matrix elements can change the Auger rates by as much as a factor of 2. The spin-orbit mixing and Breit interaction are responsible for the decay of most of the quartet states. In particular, the 2{ital p}{sup 5}3s3p{sup 4}D{sub 7/2} metastable state of low-{ital Z} ions decays predominantly by Auger-electron emission via the magnetic interaction.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5508047
• Journal Information: Physical Review (Section) A: General Physics; (USA), Journal Name: Physical Review (Section) A: General Physics; (USA) Vol. 40:5; ISSN PLRAA; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ALKALI METALS
ATOMIC IONS
ATOMS
AUGER EFFECT
CHARGED PARTICLES
CONFIGURATION INTERACTION
CORRECTIONS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FIELD THEORIES
GENERAL RELATIVITY THEORY
IONS
ISOELECTRONIC ATOMS
METALS
METASTABLE STATES
MULTICHARGED IONS
RELATIVITY THEORY
SODIUM