MCDHF calculations and study of plasma parameters for Li-like ions

Full text: Extensive configuration interaction calculations for several Ne-like ions (Z=72-75) are performed. we have reported multiconfiguration Dirac-Fock transition energies and wavefunction compositions of 209 levels belonging to the configurations 2p⁵ns (n=3,4,5,6,7), 2p⁵np (n=3,4,5,6,7), 2p⁵nd (n=3,4,5,6,7), 2p⁵nf (n=4,5), 2p⁵5g, 2s2p⁶ns(n=3,4,5), 2s2p⁶np (n=3,4,5), 2s2p⁶nd (n=3,4,5), 2s2p⁶nf (n=4,5) and 2s2p⁶5g of Hf LXIII, Ta LXIV, W XV and Re LXVI. Radiative rates, oscillator strengths, transition wavelengths and line strengths have been calculated for all electric dipole (E1), magnetic dipole (M1), electric quadrupole (E2) and magnetic quadrupole (M2) transitions among these levels. These values were obtained using the GRASP (general-purpose relativistic atomic structure package) code which includes Breit and QED effects along with Dirac-Fock potential and second order coulomb interaction. We have compared our results with the data complied using FAC (Flexible Atomic Code) and also with the recent results available in the literature. The accuracy of the data is assessed. Our calculated results are in good agreement with previous theoretical results and compiled values of the National Institute for Standards and Technology (NIST). We have also provided the line intensity ratios and plasma parameters for optically thin plasma. Our calculated data may be useful for experimentalists in identifying the fine-structure levels, for plasma modeling, astrophysical research applications. (author)