Relativistic many-body calculations of excitation energies and transition rates from core-excited states in copperlike ions

Journal Article · Thu May 01 04:00:00 EDT 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.67.052507· OSTI ID:20636374

Safronova, U I; Johnson, W R; Shlyaptseva, A; Hamasha, S ^[1]

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1. Department of Physics, University of Notre Dame, Notre Dame, Indiana 46566 (United States)

Energies of (3s{sup 2}3p{sup 6}3d{sup 9}4l4l{sup '}), (3s{sup 2}3p{sup 5}3d{sup 10}4l4l{sup '}), and (3s3p{sup 6}3d{sup 10}4l4l{sup '}) states for Cu-like ions with Z=30-100 are evaluated to second order in relativistic many-body perturbation theory (RMBPT) starting from a Ni-like Dirac-Fock potential. Second-order Coulomb and Breit-Coulomb interactions are included. Correction for the frequency dependence of the Breit interaction is taken into account in lowest order. The Lamb shift correction to energies is also included in lowest order. Intrinsic particle-particle-hole contributions to energies are found to be 20-30 % of the sum of one- and two-body contributions. Transition rates and line strengths are calculated for the 3l-4l{sup '} electric-dipole (E1) transitions in Cu-like ions with nuclear charge Z=30-100. RMBPT including the Breit interaction is used to evaluate retarded E1 matrix elements in length and velocity forms. First-order RMBPT is used to obtain intermediate coupling coefficients, and second-order RMBPT is used to calculate transition matrix elements. A detailed discussion of the various contributions to the dipole- matrix elements and energy levels is given for copperlike tungsten (Z=74). The transition energies used in the calculation of oscillator strengths and transition rates are from second-order RMBPT. Trends of the transition rates as functions of Z are illustrated graphically for selected transitions. Comparisons are made with available experimental data. These atomic data are important in the modeling of M-shell radiation spectra of heavy ions generated in electron-beam ion trap experiments and in M-shell diagnostics of plasmas.

• OSTI ID: 20636374
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 67; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BASIC INTERACTIONS
COMPARATIVE EVALUATIONS
CORRECTIONS
E1-TRANSITIONS
ELECTRIC DIPOLES
ELECTRON BEAMS
EXCITATION
EXCITED STATES
FREQUENCY DEPENDENCE
HEAVY IONS
INTERMEDIATE COUPLING
LAMB SHIFT
M SHELL
MATRIX ELEMENTS
MULTICHARGED IONS
OSCILLATOR STRENGTHS
PERTURBATION THEORY
RELATIVISTIC RANGE
TUNGSTEN IONS
TWO-BODY PROBLEM