Core-polarization corrected relativistic energies and radiative data for one-electron spectra of Bi V through U XIV

2018 ◽  
Vol 96 (6) ◽  
pp. 610-614 ◽  
Author(s):  
J. Migdalek
Keyword(s):  
Oscillator Strength ◽  
Electron Correlation ◽  
Valence Electron ◽  
Energy Levels ◽  
Oscillator Strengths ◽  
Isoelectronic Sequence ◽  
Core Polarization ◽  
Electron Spectra ◽  
Collapse Region ◽  
Ionized Systems

The relativistic core-polarization corrected Dirac–Fock energy levels, oscillator strength, and lifetimes are predicted for highly ionized spectra of gold isoelectronic sequence from Bi V through U XIV. It is demonstrated that core polarization (core–valence electron correlation) strongly affects oscillator strengths and lifetimes of 6s–6p, 6p–5d, and 6d–5f transitions (the latter particularly in the vicinity of the collapse region) even for highly ionized systems of gold isoelectronic sequence.

RELATIVISTIC ENERGY, OSCILLATOR STRENGTHS AND TRANSITION RATES OF THE 1s2 2 ln l 1S(m)(n =2–6, m1–5) STATES FOR Be-LIKE SYSTEM

2005 ◽  
Vol 16 (06) ◽  
pp. 951-968 ◽  
Author(s):  
MENG ZHANG ◽  
BING-CONG GOU
Keyword(s):  
Experimental Data ◽  
Energy Levels ◽  
Oscillator Strengths ◽  
Relativistic Energy ◽  
Transition Rates ◽  
Isoelectronic Sequence ◽  
Polarization Effects ◽  
First Order ◽  
Variational Calculations ◽  
First Order Perturbation

Variational calculations are carried out with a multiconfiguration-interaction wave function to obtain the relativistic energies of the 1s2 2 ln l 1 S (m)(n =2–6, m1–5) states for the beryllium isoelectronic sequence (Z =4–10). Relativistic corrections and the mass polarization effects are evaluated with the first-order perturbation theory. The identifications of the energy levels for 1s2 2 ln l 1 S (m)(n =2–6, m1–5) states in the Be-like ions are reported. The oscillator strengths, transition rates and wavelengths are also calculated. The calculated results are compared with other theoretical and experimental data in the literature.

Energies, wavelengths, lifetimes, E1, M1, E2, and M2 transitions rates for the sulfur isoelectronic sequence Fe XI, Nb XXVI–In XXXIV

2017 ◽  
Vol 95 (4) ◽  
pp. 393-401 ◽  
Author(s):  
K. Wang ◽  
S. Li ◽  
R. Si ◽  
C.Y. Chen ◽  
J. Yan ◽  
...  
Keyword(s):  
Quantum Electrodynamics ◽  
Energy Levels ◽  
Theoretical Data ◽  
Electric Quadrupole ◽  
Oscillator Strengths ◽  
Transition Rates ◽  
Isoelectronic Sequence ◽  
Fusion Plasma ◽  
Magnetic Quadrupole ◽  
Theoretical Results

Energies, wavelengths, lifetimes, oscillator strengths, electric dipole (E1), electric quadrupole (E2), magnetic dipole (M1), and magnetic quadrupole (M2) transition rates among the 42 fine structure levels belonging to the 3s23p4, 3s23p33d, and 3s3p5 configurations for S-like Fe and S-like ions with 41 ≤ Z ≤ 49 are calculated using the fully relativistic multiconfiguration Dirac–Fock (MCDF) method. In the calculations, contributions from correlations within the n = 6 complex, Breit interaction, and quantum electrodynamics effects are included. Detailed comparisons are made between the present results and the available experimental and other theoretical data. We found that our calculated energy levels generally agree within ≤0.5% with the experimentally compiled results, and the transition rates agree within ≤12% with other theoretical results for a majority of the transitions. These accurate theoretical data should be beneficial in fusion plasma research and astrophysical applications.

Systematic trends along the potassium sequence: Study of ns2S–mp2P0 transitions

1991 ◽  
Vol 69 (10) ◽  
pp. 1273-1283 ◽  
Author(s):  
Inmaculada Martin ◽  
Carmen Lavín ◽  
Carmen Barrientos
Keyword(s):  
Dipole Transition ◽  
Quantum Defect ◽  
Oscillator Strengths ◽  
Transition Operator ◽  
Graphical Form ◽  
Isoelectronic Sequence ◽  
Core Polarization ◽  
Polarization Effects ◽  
General Improvement ◽  
Sequence Study

The quantum defect orbital (QDO) method, with the use of a core polarization-corrected dipole transition operator, was employed to determine oscillator strengths for potassium and some of its isoelectronic ions (CaII–CrVI). The inclusion of core-valence polarization effects leads to a general improvement of the QDO f values. Systematic trends of individual oscillator strengths along the isoelectronic sequence are also shown in a graphical form.

Sign in / Sign up

Export Citation Format

Share Document