TY  - JOUR
A1  - Plunien, Günter
A1  - Müller, Berndt
A1  - Greiner, Walter
A1  - Soff, Gerhard
T1  - Nuclear polarization in heavy atoms and superheavy quasiatoms
T2  - Physical review A
N2  - 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.
Y1  - 2006
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2425
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-29794
UR  - http://link.aps.org/abstract/PRA/v43/p5853
VL  - 43
IS  - 11
SP  - 5853
EP  - 5866
ER  -