Atomic structure calculations for Br-like ions

Abstract

Energy levels, wavefunction compositions, and lifetimes are computed for all levels of 4s24p5, 4s24p44d, and 4s4p6 configurations in Br-like ions (Z = 47–50). We use the multiconfigurational Dirac–Fock method to generate the wavefunctions. We also present the transition wavelengths, oscillator strengths, transition probabilities, and line strengths for the electric dipole (E1) transition from the ground state configuration. We compare our calculated results with the available data in the literature and good agreement is obtained, which confirms the quality of our results. Moreover, we predict some new atomic data that have not been available so far and may be important for plasma diagnostic analysis in fusion plasma.

Radiative rates for E1, E2, M1, and M2 transitions in Br-like ions with43≤Z≤50

“…(1)- (5) given in [2], and the number of transitions are not the same for all ions, because their level orderings are not common. The only data available for comparison purposes are those of Goyal et al [6], where there are no discrepancies for calculations performed with the same CI. However, significant differences are Table 2.…”

“…The need for a large amount of atomic data and for a wide range of ions is particularly urgent with the developing ITER project. Therefore, in a recent paper Goyal et al [6] have calculated energies and lifetimes for the lowest 31 levels of the 4s 2 4p 5 , 4s 2 4p 4 4d and 4s4p 6 configurations of the four Br-like ions Ag XIII, Cd XIV, In XV, and Sn XVI. For the calculations, they adopted the well known and widely used GRASP code [7], but included only limited CI (configuration interaction).…”

Energy levels and radiative transition rates for Ba XLVIII

“…Apart from listing jj nomenclature, it also provides LSJ designations of the levels. This has successfully been used before by ourselves and others [28][29][30][31][32][33][34] to calculate atomic data. Additionally, the extended average level (EAL) method has been used for the calculations, which produces a compromise set of orbitals and provides results comparable to other options.…”

Calculation of energy levels, lifetimes and radiative data for La XXIX to Sm XXXIV

“…This method was developed by Grant et al [18] and improved by Norrington [17] and has been successfully applied in our previous works [19][20][21][22][23][24][25][26][27][28][29][30]. The contributions from Breit interactions as well as QED corrections as a first order perturbation theory have been also included.…”