Atomic structure calculations and study of plasma parameters of Al-like ions

Full text: In the present work, the spectroscopic properties and plasma characteristics of Al-like ions (5760) are investigated in an extensive and detailed manner by adopting GRASP package based on fully relativistic Multi-Configuration Dirac-Fock (MCDF) wave-functions. We have presented energy levels of lowest 148 levels for Al-like ions. We have also provided radiative data for electric dipole (E1), magnetic dipole (M1), electric quadrupole (E2) and magnetic quadrupole (M2) transitions for Al-like ions. We have also done a similar parallel calculation by employing fully relativistic distorted wave flexible atomic code (FAC) to check the reliability and authenticity of our results. Our calculated energy levels match well with our FAC results and other available results and we have discussed the discrepancies of our results with them. The variation of the line intensity ratio, electron density, plasma frequency and plasma skin depth with plasma temperature and nuclear charge are discussed graphically in detail for optically thin plasma in local thermodynamic equilibrium (LTE). We believe that our obtained results may be beneficial in future for comparisons and identification of spectral lines, in plasma modelling and in fusion and astrophysical plasma research. (author)