Energies and Landé factors for some excited levels in Lu I (Z = 71)

2011

Arab J Sci Eng

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We have reported a relativistic multiconfiguration Dirac-Fock calculation including Breit and quantum electrodynamic contributions on the level structure of atomic actinium, Ac I (Z = 89). The computations have been carried out for the low 45 even and 60 odd-parity levels, and the electric dipole transition parameters (wavelengths, oscillator strengths and transition probabilities) for some transitions between these levels. Comparison has been also made with other results in available literature.

Section: Introductionmentioning

confidence: 99%

Energy Levels and Electric Dipole Transitions for Neutral Actinium (Z = 89)

Ürer

2011

Arab J Sci Eng

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“…Therefore, we varied some parameter values increasingly in the MCHF atomic-structure package (maximum number of eigenpairs, maximum number of configuration state functions, maximum number of terms and maximum number of coefficients) so that the calculations for the configurations above could reasonably be made. We reported energies and Landé g-factor from MCHF calculations for Lu I [46]. In the structure calculation and accurate prediction of radiative atomic properties for a heavy atom such as Lu I, complex configuration interaction and relativistic effects must be considered simultaneously.…”

Section: Resultsmentioning

confidence: 99%

Electric Dipole Transitions for Lu I (Z = 71)

Karaçoban

2011

Arab J Sci Eng

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The aim of this study was to obtain a description of the neutral lutetium spectrum. We calculated the radiative parameters (wavelengths, weighted oscillator strengths and transition probabilities) for electric dipole (E1) transitions for some excited levels in neutral lutetium (Lu I, Z = 71). Two configuration interaction methods were used: the multiconfiguration Hartree-Fock method developed by Fischer within the Breit-Pauli relativistic framework (MCHF + BP), and Cowan's relativistic Hartree-Fock (HFR) method. Results obtained have been compared with each other and with other works. A discussion of these calculations for Lu I in this study has also been in view of the MCHF + BP and HFR methods.

“…We have performed the atomic structure calculations on lanthanide atoms and ions, systematically. We reported some works related to these atoms and ions using the methods mentioned above [31][32][33][34][35][36][37][38][39][40][41][42]. In addition, we presented the energies of 5d 2 , 5d6s, 6s 2 , and 6p 2 excited levels and ionization energy for La II by the MCHF+BP method [34].…”

Section: Introductionmentioning

confidence: 99%

Energy Levels and the Landé -Factors for Singly Ionized Lanthanum

Karaçoban

Journal of Atomic and Molecular Physics

2013

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We have calculated the energies and the Landé -factors for 5d2 , 5d6s, 6s 2 , 4f6p, 5d7s, 5d6d, 4f 2 , 6p 2 , 6s6d, 6s7s, 4f6s, 4f5d, 5d6p, 6s6p, 4f7s, 4f6d, 5d7p, and 6s7p excited levels of singly ionized lanthanum (La II). These calculations have been carried out by using the multiconfiguration Hartree-Fock method within the framework of the Breit-Pauli Hamiltonian (MCHF+BP) and the relativistic Hartree-Fock (HFR) method. The obtained results have been compared with other works available in the literature. A discussion of these calculations for La II in this study has also been in view of the MCHF+BP and HFR methods.