Akademik Veri Yönetim Sistemi
EUROPEAN PHYSICAL JOURNAL PLUS, cilt.137, sa.4, 2022 (SCI-Expanded)
A relativistic investigation for Li, Na and K atoms immersed in a quantum plasma environment, under the influence of spherical encompassment and external electric field is carried out in this study, for the first time. Considering the closed shells of Li, Na and K atoms, the model potential approach is taken into account for the interaction of the valence electron. Due to the shielding effect of the quantum plasma environment modeled by the exponential cosine screened Coulomb (ECSC) potential, the model potential is modified, which in turn allows the consideration of plasma-immersed alkaline systems. Then, the interaction potential consists of the modified model potential, the spherical encompassment effect, and the external electric field. To obtain the bound states of the interaction potential, the decoupling of the second-order Dirac equation for the large and small components of the radial atomic wave functions is considered. The Dirac equation including the interaction potential is solved numerically within the decoupling formalism. The effects of the plasma shielding, spherical encompassment and external electric field on the relativistic energy spectrum, relativistic transition energies and relativistic oscillator strengths are probed and detailed elucidations are performed. In addition to elucidating the effects of interaction potential parameters on the aforementioned observables, detailed analyzes such as alternatives to each other, dominance, optimal ranges or critical values are also carried out.