2013/06/04 by Pradip Kumar Mondal, Narendra Nath Dutta, Gopal Dixit +1
Chemistry · Physics and Astronomy · #Ab initio #Advanced Chemical Physics Studies #Atomic and Molecular Physics #Atomic physics #Dipole #Excitation #Ion #Ionization #Ionization energy #Mass Spectrometry Techniques and Applications #Oscillator strength #Physics #Plasma #Quadrupole #Quantum mechanics #Spectral line #cond-mat.mes-hall #physics.atom-ph #physics.chem-ph #physics.plasm-ph
paper · pdf · doi:10.1103/physreva.87.062502
published as Phys. Rev A 87, 062502 (2013) · 20 pages, 4 figures
arxiv created 2013/06/04 · openalex publication_date 2013/06/04 · arxiv updated 2013/06/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
This work presents accurate ab initio investigations of various spectroscopic properties of a few Li-like ions in the presence of a plasma environment within the Debye screening potential. The coupled-cluster theory in the relativistic framework has been employed to compute ionization potentials, excitation energies, electric dipole oscillator strengths, and electric quadrupole transition probabilities of Li-like C3+, N4+, and O5+ ions. The unretarded Breit interaction has been implemented to increase the accuracy of the calculations. The effects of ion density and temperature on the ionization potentials, excitation energies, electric dipole oscillator strengths, and electric quadrupole transition probabilities have been investigated in the plasma environment. It is found that the plasma screening leads to a sharp decrease in the ionization potential as the screening strength increases. With increasing strength, the oscillator strengths associated with 2s 2S1/2\ensuremath→2p 2P1/2,3/2 transitions increase, whereas the transition probabilities associated with 3d 2D3/2,5/2\ensuremath→2s 2S1/2 transitions decrease.