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In this paper we consider the contribution of the anomalous magnetic momentsof protons and neutrons to the nuclear charge density. We show that thespin-orbit contribution to the mean-square charge radius, which has beenneglected in recent nuclear calculations, can be important in light halonuclei.We estimate the size of the effect in helium, lithium, and beryllium nuclei. Itis found that the spin-orbit contribution represents a ~2% correction to thecharge density at the center of the Be-7 nucleus. We derive a simple expressionfor the correction to the mean-square charge radius due to the spin-orbit termand find that in light halonuclei it may be larger than the Darwin-Foldy termand comparable to finite size corrections. A comparison of experimental andtheoretical mean-square radii including the spin-orbit contribution ispresented.

The effect of spin-orbit nuclear charge density corrections due to the anomalous magnetic moment on halonuclei