dorsal/arxiv
View SchemaRelativistic many-body calculations of excitation energies and transition rates from core-excited states in copperlike ions
| Authors | U. I. Safronova, W. R. Johnson, A. Shlyaptseva, S. Hamasha |
|---|---|
| Categories | |
| ArXiv ID | physics/0302042 |
| URL | https://arxiv.org/abs/physics/0302042 |
| DOI | 10.1103/PhysRevA.67.052507 |
Abstract
Energies of (3s2 3p6 3d9 4l4l'), (3s2 3p5 3d10 4l4l'), and (3s 3p6 3d10 4l4l') 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' 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 modeling of M-shell radiation spectra of heavy ions generated in electron beam ion trap experiments and in M-shell diagnostics of plasmas.
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"abstract": "Energies of (3s2 3p6 3d9 4l4l\u0027), (3s2 3p5 3d10 4l4l\u0027), and (3s 3p6 3d10\n4l4l\u0027) states for Cu-like ions with Z = 30 -100 are evaluated to second order\nin relativistic many-body perturbation theory (RMBPT) starting from a Ni-like\nDirac-Fock potential. Second-order Coulomb and Breit-Coulomb interactions are\nincluded. Correction for the frequency-dependence of the Breit interaction is\ntaken into account in lowest order. The Lamb shift correction to energies is\nalso included in lowest order. Intrinsic particle-particle-hole contributions\nto energies are found to be 20-30% of the sum of one- and two-body\ncontributions. Transition rates and line strengths are calculated for the\n3l-4l\u0027 electric-dipole (E1) transitions in Cu-like ions with nuclear charge Z =\n30 - 100. RMBPT including the Breit interaction is used to evaluate retarded E1\nmatrix elements in length and velocity forms. First-order RMBPT is used to\nobtain intermediate coupling coefficients and second-order RMBPT is used to\ncalculate transition matrix elements. A detailed discussion of the various\ncontributions to the dipole matrix elements and energy levels is given for\ncopperlike tungsten (Z = 74). The transition energies used in the calculation\nof oscillator strengths and transition rates are from second-order RMBPT.\nTrends of the transition rates as functions of $Z$ are illustrated graphically\nfor selected transitions. Comparisons are made with available experimental\ndata. These atomic data are important in modeling of M-shell radiation spectra\nof heavy ions generated in electron beam ion trap experiments and in M-shell\ndiagnostics of plasmas.",
"arxiv_id": "physics/0302042",
"authors": [
"U. I. Safronova",
"W. R. Johnson",
"A. Shlyaptseva",
"S. Hamasha"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevA.67.052507",
"title": "Relativistic many-body calculations of excitation energies and transition rates from core-excited states in copperlike ions",
"url": "https://arxiv.org/abs/physics/0302042"
},
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