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UT-ORNL Study: Calcium-48’s ‘Neutron Skin’ Thinner Than Previously Thought

An international team led by joint UT-Oak Ridge National Laboratory faculty used America’s most powerful supercomputer, Titan, to calculate the neutron distribution and related observables of calcium-48, an isotope with an atomic nucleus consisting of twenty protons and twenty-eight neutrons. Computing the nucleus revealed that the difference between the radii of neutron and proton distributions—called