Nuclear polarization in heavy atoms and superheavy quasiatoms

  • We consider the contribution of nuclear polarization to the Lamb shift of K- and L-shell electrons in heavy atoms and quasiatoms. Our formal approach is based on the concept of effective photon propagators with nuclear-polarization insertions treating effects of nuclear polarization on the same footing as usual QED radiative corrections. We explicitly derive the modification of the photon propagator for various collective nuclear excitations and calculate the corresponding effective self-energy shift perturbatively. The energy shift of the 1s1/2 state in 92238U due to virtual excitation of nuclear rotational states is shown to be a considerable correction for atomic high-precision experiments. In contrast to this, nuclear-polarization effects are of minor importance for Lamb-shift studies in 82208Pb.

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Author:Günter Plunien, Berndt MüllerORCiDGND, Walter GreinerGND, Gerhard SoffGND
Parent Title (German):Physical review A
Document Type:Article
Date of Publication (online):2006/07/07
Year of first Publication:1991
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2006/07/07
Page Number:14
First Page:5853
Last Page:5866
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht