Accurate calculation of oscillator strengths for Cl II lines using non-orthogonal wavefunctions*
Department of Physics, Clark Atlanta University, Atlanta, GA 30314, USA
Accepted: 5 July 2004
Non-orthogonal orbitals technique in the multiconfiguration Hartree-Fock approach is used to calculate oscillator strengths and transition probabilities for allowed and intercombination lines in Cl II. The relativistic corrections are included through the Breit-Pauli Hamiltonian. The Cl II wave functions show strong term dependence. The non-orthogonal orbitals are used to describe the term dependence of radial functions. Large sets of spectroscopic and correlation functions are chosen to describe adequately strong interactions in the , and Rydberg series and to properly account for the important correlation and relaxation effects. The length and velocity forms of oscillator strength show good agreement for most transitions. The calculated radiative lifetime for the state is in good agreement with experiment.
Key words: atomic data / atomic processes / line: formation
© ESO, 2004