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 ...

Physicists working with molybdenum-84, a nucleus containing exactly 42 protons and 42 neutrons, have found that this seemingly balanced atom defies one of nuclear physics’ longest-standing ...

Image of the emission of 4 neutrons (blue spheres) from the exotic nucleus oxygen-28, which consists of 8 protons (red spheres) and 20 neutrons. According to the traditional model, the nucleons inside ...