Berlin 2001 – wissenschaftliches Programm

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A: Atomphysik

A 17: Posters Friday (Spectroscopy)

A 17.22: Poster

Freitag, 6. April 2001, 12:30–15:00, AT3

QED PERTURBATION THEORY CALCULATION OF THE ATOMIC PARITY NONCONSERVATION — •Sergey Filatov — Inst.Appl.Math.OHMI,P.O.Box 108, Odess-9, 65009, Ukraine

A relativistic model perturbation theory is used in studying the atomic parity non-conservation effect. The model potential of Ivanov-Ivanova is used in the zeroth order Dirac hamiltonian. To receive an optimal one-electron basis it is used special QED procedure of Glushkov and Ivanov, based on the gauge invariance principle conversation. The correlation corrections of the high orders are taken into account within the Green functions method (with the use of the Feynman diagrams technique). We have taken into account all correlation corrections of the second order and dominated classes of the higher orders diagrams (electrons screening, particle-hole interaction, mass operator iterations).The nuclear size effect is accounted in the electric and polarization potentials within new numeral schemes. Method is applied in calculations energy levels, hyperfine structure intervals, E1, M1 transitions amplitudes in heavy atoms of caesium, Vi, Pb.