Finite nuclear size and Lamb shift of p-wave atomic states

Details Finite nuclear size and Lamb shift of p-wave atomic states Finite nuclear size and Lamb shift of p-wave atomic states

2002-12-03

arxiv.org/abs/physics/0212018v1

Physics

Atomic Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevA.67.062111

We consider corrections to the Lamb shift of p-wave atomic states due to the finite nuclear size (FNS). In other words, these are radiative corrections to the atomic isotop shift related to FNS. It is shown that the structure of the corrections is qualitatively different from that for s-wave states. The perturbation theory expansion for the relative correction for a $p_{1/2}$-state starts from $\alpha\ln(1/Z\alpha)$-term, while for $s_{1/2}$-states it starts from $Z\alpha^2$ term. Here $\alpha$ is the fine structure constant and $Z$ is the nuclear charge. In the present work we calculate the $\alpha$-terms for $2p$-states, the result for $2p_{1/2}$-state reads $(8\alpha/9\pi)[\ln(1/(Z\alpha)^2)+0.710]$. Even more interesting are $p_{3/2}$-states. In this case the ``correction'' is by several orders of magnitude larger than the ``leading'' FNS shift.

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