Temat: 31.15.ag - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Radiative lifetimes for singly ionized beryllium
Autorzy:: Çelik, G.
Atalay, B.
Ateş, Ş.
Tematy:: 31.15.ag
32.70.Cs; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1157856.pdf Link otwiera się w nowym oknie
Opis:: The theoretical lifetimes for singly ionized beryllium (Be II) have been calculated using the weakest bound electron potential model theory and the quantum defect orbital theory under the assumption of the LS coupling scheme. In the calculations, many states are considered. Some lifetime values for highly excited levels have been obtained using these methods. The lifetimes presented in this work have been compared with the early theoretical calculations and measurements presented in the literature. A good agreement with the results in the literature has been obtained.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Oscillator Strengths for Allowed Transitions in Li(II)
Autorzy:: Ateş, Ş.
Çelik, G.
Tematy:: 31.15.ag
32.70.Cs; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1807774.pdf Link otwiera się w nowym oknie
Opis:: Electric dipole oscillator strengths have been computed for transitions between both multiplet and individual lines in the Li(II) ion. The weakest bound electron potential model theory has been used. We have employed both numerical Coulomb approximation wave functions and numerical non-relativistic Hartree-Fock wave functions in the determination of expectation values of radii. The necessary energy values have been taken from experimental ionization energies. The oscillator strengths calculated with parameters obtained by using the two different wave functions have been compared not only to each other but also to other data taken from literature. A good agreement with results in literature has been obtained.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Energies, Landé Factors, and Lifetimes for Some Excited Levels of Neutral Ytterbium (Z = 70)
Autorzy:: Karaçoban, B.
Özdemır, L.
Tematy:: 31.15.ag
31.15.aj
31.15.V-
31.30.-i; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1505337.pdf Link otwiera się w nowym oknie
Opis:: We have calculated relativistic energies, Landé factors, and lifetimes for some excited levels outside the core [Xe] in neutral ytterbium (Yb I, Z=70) using two configuration interaction methods (multiconfiguration Hartree-Fock method within the framework of Breit-Pauli relativistic corrections developed by Fischer, and Cowan's relativistic Hartree-Fock method). Results obtained have been compared with other calculations and experiments.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Spectroscopic parameters of neutral argon atom
Autorzy:: Salah, W.
Hassouneh, O.
Tematy:: 31.15.ag
31.15.aj
31.15.am; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1058748.pdf Link otwiera się w nowym oknie
Opis:: We have calculated the spectroscopic data of the odd series nd [1/2]1 (3 ≤ n ≤ 9) of neutral argon atom relative to the ground level 3P⁶ ¹S₀ using a fully relativistic approach based on the Dirac equation. This series is one of three intermediate Rydberg series that converge to the first limit of ionization. The energy levels of this series are predicted. The obtained energy levels results are judged by comparing them with the experimental ones available in the literature. Within the uncertainty in the theoretical results, the agreement between our results and the experimental ones was found to be reasonable. Based on this agreement, the oscillator strengths f_{ij}, the radiative transition rates A_{ij}, the Landé g-factor, the magnetic dipole moment and the electric quadrupole hyperfine constants for the levels in question are calculated. The obtained results of f_{ij}, A_{ij}, and Landé g-factor are compared with the theoretical and experimental results published by other researchers where available as well as those published by NIST. Within the uncertainty in our results, a good agreement is found. Moreover, the studied levels are situated near and under the first limit of ionization where autoionization effects take place.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Transition Probabilities and Oscillator Strengths for E1 Transitions of Ce III
Autorzy:: Karaçoban Usta, B.
Tematy:: 31.15.ag
31.15.aj
31.30.-i
32.70.Cs; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1189932.pdf Link otwiera się w nowym oknie
Opis:: We report calculations of wavelengths, oscillator strengths, and transition probabilities (or rates) for electric dipole (E1) transitions in doubly ionized cerium (Ce III, Z=58), using the relativistic Hartree-Fock method developed by Cowan. Comparisons are made with the previously reported available calculations and experiments in literature.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Energies and Radiative Transition Parameters for Mg-Like Tungsten
Autorzy:: Özdemír, L.
Günday Konan, G.
Kabakçi, S.
Tematy:: 31.15.ag
31.15.aj
31.30.-i
32.70.Cs; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1399262.pdf Link otwiera się w nowym oknie
Opis:: By applying AUTOSTRUCTURE code, the energies and transitions for allowed (E1) and forbidden (E2, M1, and M2) lines for low-lying configurations in magnesium-like tungsten $(W^{62+})$ are studied. The electron correlation and relativistic effects are included in computations. Good agreement between our results and available other results are found. The data for E2, M1 and M2 besides some E1 transitions for low-lying levels are presented for the first time.
Dostawca treści:: Biblioteka Nauki

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na półce

Skocz do pozycji: 7.

Tytuł:: Transition Parameters for Doubly Ionized Lutetium
Autorzy:: Karaçoban, B.
Özdemír, L.
Tematy:: 31.15.ag
31.15.aj
31.30.-i
32.70.Cs; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1400123.pdf Link otwiera się w nowym oknie
Opis:: Using the relativistic Hartree-Fock method developed by Cowan, we calculated the electric dipole (E1) transition parameters such as the wavelengths, the weighted oscillator strengths, and the transition probabilities (or rates) for doubly ionized lutetium (Lu III, Z=71). We compared the results with available calculations and experiments in literature. A discussion of these calculations for Lu III in this study has also been made in view of the relativistic Hartree-Fock method.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Energies and Lifetimes for Some Excited Levels in La I
Autorzy:: Karaçoban, B.
Özdemir, L.
Tematy:: 31.15.ag
31.15.aj
31.15.V-
31.30.-i
32.70.Cs; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1812350.pdf Link otwiera się w nowym oknie
Opis:: We calculated relativistic energies and Landéfactors for 5d6s², 5d²6s, 5d³, 5d6s7s, 4f6s6p, 5d6s6p, 5d²6p, and 4f5d6s levels in neutral lanthanum (Z=57). We also obtained electric dipole transition energies and lifetimes for some excited levels. The calculations are based upon the multiconfiguration Hartree-Fock method within the framework Breit-Pauli relativistic corrections. Moreover, the results obtained were compared with other calculations and experiments.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Energies and Lifetimes of Levels for Doubly Ionized Xenon and Radon
Autorzy:: Eser, S.
Özdemır, L.
Tematy:: 31.15.ag
31.15.aj
31.15.V-
31.30.-i; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1030805.pdf Link otwiera się w nowym oknie
Opis:: We have reported the energies and radiative lifetimes of levels for doubly ionized xenon (Xe III) and radon (Rn III). The calculations have been performed using the general-purpose relativistic atomic structure package based on fully relativistic multiconfiguration Dirac-Fock method. We have compared the results obtained from this work for (Xe III) with previous works in available literature. For (Rn III), there is no data except a few energy levels. Hence, we have presented new values on the energy levels of (Rn III).
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Electric Dipole Transition Parameters for Low-Lying Levels for Neutral Actinium
Autorzy:: Özdemır, L.
Ürer, G.
Tematy:: 31.15.ag
31.15.aj
31.30.-i
32.70.Cs; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1535616.pdf Link otwiera się w nowym oknie
Opis:: We have calculated the energies of some low-lying levels ($6d7s^2,$ $6d^2 7s,$ $6d7s7p$ and $6d^27p$) and electric dipole transition parameters (wavelengths, oscillator strengths and transition probabilities) between them for neutral actinium (Z=89). In the calculations, the correlation and relativistic effects are considered by multiconfiguration Hartree-Fock method within the framework Breit-Pauli Hamiltonian. The results obtained are compared with the available experimental and theoretical works in the literature.
Dostawca treści:: Biblioteka Nauki

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