A semi-empirical evaluation of parity non-conserving E1 transitions in thallium

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Abstract
The authors apply their previously-developed semi-empirical potential method in the calculation of the dominant high order many-body correlation effects in thallium which can be modelled by a central potential. The authors use this method to evaluate the thallium parity non-conserving electric dipole 6p1/2 to 7p1/2 and the 6p1/2 to 6p3/2 transitions. To estimate the accuracy of the calculation the authors also calculate the parity conserving E1 transition matrix elements and the hyperfine interaction constants. For the 6p1/2 to 7p1/2 parity non-conserving transition the authors obtain -7.97*10-11 (1+or-0.07) (-iea0QW/N) and for the 6p1/2 to 6p3/2 parity non-conserving transition -31.6*10-11 (1+or-0.09) (-iea0QW/N).