Computing of radiation parameters for atoms and multicharged ions within relativistic energy approach: Advanced Code

Хвильові і осциляторні сильні сторони Li-подібних багатозарядних іонів в рамках теорії відносного збудження багатьох тіл

“…The corresponding oscillator strength: gf= 2  n /6.6710 15 , where g is the degeneracy degree,  is a wavelength in data, obtained without using the optimized basis set and accounting for the exchangepolarization corrections; lower number in the line "Our work"with using the optimized basis set and accounting for the exchangepolarization corrections) for 1s 2 2s ( 2 S 1/2 ) → 1s 2 3p ( 2 P 1/2 ) transitions in the Li-like ions with Z=21,22. In Table 1 the data on the wavelengths, oscillator strengths, calculated by Banglin Deng et al [52] (in the framework of the relativistic configurationinteraction formalism using multiconfiguration DF wave functions and considering the Breit interaction, QED and nuclear mass corrections), Zhang et al (the Dirac-Fock-Slater method and disturbed wave approximation), Martin et al (the relativistic quantum defect method),Nahar (ab initio calculations including relativistic effects employing the Breit-Pauli R-matrix method) and the NIST data [10][11][12][13][14] are listed too. The data by Banglin Deng et al [12] are obtained in the length gauge, and the ratios (V/L; in %) of the velocity and length gauges data to check the accuracy of calculations are listed.…”

“…All calculations are performed on the basis of the numeral code Superatom-ISAN (version 93). The details of the used method can be found in the references [1,11,14,[21][22][23][24].…”

“…There have been sufficiently many reports of theoretical and experimental studies of energies and oscillator strengths for the Li-like ions and other alkali-like ions (see, for example, [7][8][9][10][11][12][13][14][15]). Banglin Deng et al [12] presented the calculated wavelengths, oscillator strengths, transition probabilities, and line strengths for Li-like ions (Z = 7-30) in the framework of the relativistic configuration-interaction formalism using MCDF wave functions and considering the Breit interaction, QED and nuclear mass corrections.…”

Theoretical Auger Spectroscopy of Solids: Calculation of Energy Parameters

“…In the relativistic energy approach [4][5][6][7][8][9], which has received a great applications during solving numerous problems of atomic, molecular and nuclear physics (e.g., see Refs. [1,4,5,[23][24][25][26][27][28][29][30]), the imaginary part of electron energy shift of an atom is directly connected with the radiation decay possibility (transition probability). An approach, using the Gell-Mann and Low formula with the QED scattering matrix, is used in treating the relativistic atom.…”

Надтонка Структура Важких Атомів В Рамках Релятивістської Багаточастинкової Теорії Збурень

“…In the present paper we present the calculational results for the hyperfine structure and electric quadrupole moment of the isotope R a 223 8 8 , estimated within the relativistic many-body perturbation theory formalism with a correct and effective taking into account the exchange-correlation, relativistic, nuclear and radiative corrections [3,4,[10][11][12][13][14][15][16][17][18][19][20]. Analysis of the data shows that an account of the interelectron correlation effects is crucial in the calculation of the hyperfine structure parameters.…”