Abstract
The root mean square radii of the proton density distribution in derived from measurements of charge changing cross sections with a carbon target at together with the matter radii portray thick neutron skin for despite being doubly magic. Imprints of the shell closures at and 16 are reflected in local minima of their proton radii that provide evidence for the tensor interaction causing them. The radii agree with ab initio calculations employing the chiral interaction, though skin thickness predictions are challenged. Shell model predictions agree well with the data.
- Received 11 May 2022
- Revised 31 July 2022
- Accepted 30 August 2022
DOI:https://doi.org/10.1103/PhysRevLett.129.142502
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