Nontransferable Correlation Effects and Multiplet Oscillator Strengths for Electric Dipole Transitions in Atoms with Results on C ii, N i, N ii, N III, O ii, O III, O iv, F ii, and NE II

1969 ◽  
Vol 157 ◽  
pp. 997 ◽  
Author(s):  
Paul Westhaus ◽  
Oktay Sinanoglu
Keyword(s):  
Electric Dipole ◽  
Oscillator Strengths ◽  
Correlation Effects

scholarly journals Energies and electric dipole transitions for sodium-like gold

2016 ◽  
Vol 94 (11) ◽  
pp. 1167-1174 ◽  
Author(s):  
Gülay Günday Konan ◽  
Leyla Özdemir
Keyword(s):  
Structure Data ◽  
Atomic Structure ◽  
Electric Dipole ◽  
Transition Probabilities ◽  
Electric Dipole Transition ◽  
Dipole Transition ◽  
Experimental Results ◽  
Oscillator Strengths ◽  
Correlation Effects ◽  
Good Agreement

We have reported energies and electric dipole transition parameters, such as transition probabilities, oscillator strengths, line strengths, and wavelengths for Na-like gold (Au68+, Z = 79) using AUTOSTRUCTURE atomic code. Calculations include Breit and QED contributions besides correlation effects. A few of the results have been compared with available theoretical and experimental results in the literature. Our atomic structure data for sodium-like gold are in good agreement with others. Also we have presented new results for electric dipole transitions in sodium-like gold.

Energies and Electric Dipole Transitions for Low-Lying Levels of Protactinium IV and Uranium V

2012 ◽  
Vol 67 (1-2) ◽  
pp. 89-98 ◽  
Author(s):  
Güldem Ürer ◽  
Leyla Özdemir
Keyword(s):  
Quantum Electrodynamic ◽  
Electric Dipole ◽  
Level Structure ◽  
Oscillator Strengths ◽  
Transition Rates ◽  
Correlation Effects ◽  
Excitation Energies

We have reported a relativistic multiconfiguration Dirac-Fock (MCDF) study on low-lying level structures of protactinium IV (Z =91) and uranium V (Z =92) ions. Excitation energies and electric dipole (E1) transition parameters (wavelengths, oscillator strengths, and transition rates) for these low-lying levels have been given. We have also investigated the influence of the transverse Breit and quantum electrodynamic (QED) contributions besides correlation effects on the level structure. A comparison has been made with a few available data for these ions in the literature.

scholarly journals Electric dipole transitions between low-lying levels in doubly ionized krypton, xenon, and radon

2018 ◽  
Vol 96 (6) ◽  
pp. 664-671 ◽  
Author(s):  
Selda Eser ◽  
Leyla Özdemir
Keyword(s):  
Atomic Structure ◽  
Electric Dipole ◽  
Relativistic Effects ◽  
General Purpose ◽  
Oscillator Strengths ◽  
Transition Rates ◽  
Correlation Effects ◽  
Core Correlation ◽  
Line Strengths

Using the general-purpose relativistic atomic structure package (GRASP) based on a fully relativistic multiconfiguration Dirac–Fock (MCDF) method, the transition parameters, such as transition rates (probabilities), oscillator strengths, and line strengths for the electric dipole transitions between low-lying levels are evaluated for doubly ionized krypton, xenon, and radon. Breit interactions for relativistic effects and quantum electrodynamical (QED) contributions besides valence and valence–core correlation effects are taken into account in calculations. We compare the results obtained with the available data in the literature and discuss them, when possible.

scholarly journals Transition Parameters for Doubly Ionized Lanthanum

2012 ◽  
Vol 2012 ◽  
pp. 1-15 ◽  
Author(s):  
Betül Karaçoban ◽  
Leyla Özdemir
Keyword(s):  
Least Squares ◽  
Configuration Interaction ◽  
Electric Dipole ◽  
Transition Probabilities ◽  
Energy Levels ◽  
Relativistic Effects ◽  
Oscillator Strengths ◽  
Least Squares Fitting ◽  
Hartree Fock

The transition parameters such as the wavelengths, weighted oscillator strengths, and transition probabilities (or rates) for the nd (n=5−9)−nf (n=4−8), nd (n=5−9)−np (n=6−9), np (n=6−9)−ns (n=6−10), and ng (n=5−8)−nf (n=4−8) electric dipole (E1) transitions of doubly ionized lanthanum (La III, Z=57) have been calculated using the relativistic Hartree-Fock (HFR) method. In this method, configuration interaction and relativistic effects have been included in the computations combined with a least squares fitting of the Hamiltonian eigenvalues to the observed energy levels. We have compared the results obtained from this work with the previously available calculations and experiments in literature. We have also reported new transitions with the weighted transition probabilities greater than or equal to 105.

scholarly journals Lifetimes, oscillator strengths, and transition probabilities for Ce IV

2017 ◽  
Vol 95 (11) ◽  
pp. 1103-1114
Author(s):  
Betül Karaçoban Usta ◽  
Büşra Alparslan
Keyword(s):  
Electric Dipole ◽  
Transition Probabilities ◽  
Oscillator Strengths ◽  
Hartree Fock

The lifetimes for the levels of 5p6nf (n = 5–30), 5p6np (n = 6–30), 5p6nd (n = 5–30), 5p6ng (n = 5–30), and 5p6ns (n = 7–30) configurations and the transition parameters for the electric dipole transitions between these levels have been calculated using the relativistic Hartree–Fock (HFR) method for triply ionized cerium (Ce IV, Z = 58). We have compared the results with the previously reported available calculations and experiments in the literature. Moreover, some new transition probabilities, oscillator strengths, and lifetime values for highly excited levels in Ce IV, not appearing in databases, have been obtained using this method.

Inner shell spectroscopy of (η5-C5H5)2TiCl2, (η5-C5H5)TiCl3, and TiCl4

1993 ◽  
Vol 71 (10) ◽  
pp. 1632-1644 ◽  
Author(s):  
A.T. Wen ◽  
A.P. Hitchcock
Keyword(s):  
Energy Loss ◽  
Gas Phase ◽  
Electric Dipole ◽  
Oscillator Strengths ◽  
Extended Hückel ◽  
Cyclopentadienyl Complexes ◽  
Dipole Scattering ◽  
Electron Energy Loss ◽  
Extended Hückel Calculations ◽  
Electron Energy Loss Spectra

Oscillator strengths for C 1s excitation of gas phase Cp2TiCl2 and CpTiCl3 (Cp = η5-C5H5), and Cl 2p and Ti 2p excitation of gas phase Cp2TiCl2, CpTiCl3, and TiCl4 have been derived from electron energy loss spectra recorded under electric dipole scattering conditions. The C 1s spectra are interpreted with the aid of semiempirical extended Hückel calculations and comparisons with the C 1s spectra of other cyclopentadienyl complexes. The Ti 2p spectra are interpreted using the extended Hückel results and comparisons with atomic multiplet–crystal field calculations for Ti4+ taken from the literature.

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