Ultracold neutrons for science: UCNs will help to solve mysteries of astrophysics
Scientists at Johannes Gutenberg University Mainz (JGU) in Germany have built what is currently the strongest source of ultracold neutrons. Ultracold neutrons (UCNs) were first generated here five years ago. They are much slower than thermal neutrons and are characterized by the fact that they can be stored in special containers. This property makes them important tools for experiments to investigate why matter dominates over antimatter in our universe and how the lightest elements were created directly after the Big Bang. "We have commissioned a new UCN source and improved ...


