Spectral Properties of N⁶⁺, Ne⁹⁺, and Al¹²⁺ Ions in Dense Plasma

The influence of the dense plasma environment on the energy levels and transition rates of H-like N⁶⁺, Ne⁹⁺, and Al¹²⁺ ions have been examined. The structural and spectral properties have been analyzed by employing the relativistic configuration interaction (RCI) technique using the ion sphere model as the modified interactive potential between the nucleus and the electron. It is observed that for every transition, the transition energies are red shifted. The plasma screening effect on weighted oscillator strengths has also been examined. Additionally, the ground state thermodynamic pressure within the ion sphere and the radial wavefunctions of the spectral electron for the various states of N⁶⁺, Ne⁹⁺, and Al¹²⁺ ions at plasma density 1 × 10²³ cm^–3 were also studied. The line intensity ratio has also been computed for the first two spectral lines: [1s_1/2 – 2p_3/2 (1–3)] and [1s_1/2 – 2p_1/2 (1–2)]. Our computed data exhibits a good quantitative agreement with the other results reported in the literature as well as with the experimental results reported in the National Institute of Science and Technology (NIST) database. The current findings will be helpful in laboratory and astrophysical plasma modelling and characterization of hot dense plasma.