T. Baumann/Michigan State Univ.

Neutrons buddy-up. At the National Superconducting Cyclotron Laboratory, collisions between a beam and target (orange) generate beryllium-$16$, which immediately decays by dineutron emission. The resulting beryllium-$14$ is deflected by a magnet (red) toward a suite of detectors (brown), while the neutron pair is measured in the Modular Neutron Array, or MoNA (green).