Nuclear polarizability of helium isotopes in atomic transitions
Abstract
We estimate the nuclear polarizability correction to atomic transition frequencies in various helium isotopes. This effect is non-negligible for high precision tests of quantum electrodynamics or accurate determination of the nuclear charge radius from spectroscopic measurements in helium atoms and ions. In particular, it amounts to 28(3) kHz for 1S-2S transition in 4He+.
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