Physicists have found a new “island of inversion” in the nucleus of molybdenum-84, a perfectly balanced atom with equal numbers of protons and neutrons. The discovery upends a decades-old assumption ...

SEVERAL years ago A. A. Ashour and V. C. A. Ferraro (private communication, 1955, and following communication) discovered that certain distributions of freely decaying currents in a non-isotropic ...