FIONA Measures the Mass Number of 2 Superheavy Elements: Moscovium and Nihonium

A team led by nuclear physicists at Berkeley Lab has reported the first direct measurements of the mass numbers for the nuclei of two superheavy elements: moscovium, which is element 115, and nihonium, element 113. They obtained the results using FIONA, a new tool that is designed to resolve the properties of the heaviest elements.