THE successful accomplishment of separating the isotopes of mercury (NATURE, 106, 144, 1920; Phil. Mag. 43, 31, 1922) suggested an investigation to determine the extent to which samples of mercury ...

A schematic diagram of proton and neutron distributions for mirror nuclei argon-31 and aluminum-31. Left side is the weakly bound proton-rich nucleus argon-31, which is predicted to exhibit a ...