Comparisons between different calculations of PNC in Cs and Tl

This paper presents detailed results of a new PNC-TDHF calculation for the 6p1/2 → 7p1/2 transition in Tl. In the PNC-TDHF method all diagrams involving only single excitations are included to all orders. Although our calculations were based on relativistic Hartree-Fock orbitals, the result should be independent of the starting potential. The relations between the calculations performed so far for Cs and Tl by different groups are analysed and the results are compared to experimental values. (orig.)