Oscillator strengths and lifetimes for the P XII

Semi-empirical weighted oscillator strengths (gf) and lifetimes presented in this work for all experimentally known electric dipole P XII spectral lines and energy levels were computed within a multiconfiguration Hartree-Fock relativistic approach. In this calculation, the electrostatic parameters were optimized by a least-squares procedure in order to improve the adjustment to experimental energy levels. The method produces the lifetime and gf values that are in agreement with intensity observations used for the interpretation of spectrograms of solar and laboratory plasmas. Keywords: atomic transition, energy level, oscillator strength, lifetime. СИЛЫ ОСЦИЛЛЯТОРОВ И ВРЕМЕНА ЖИЗНИ ДЛЯ ИОНА P XII А. Х. Маниа