During the war, many microwave techniques were learned that were later used at Columbia for the development of the maser, the microwave precursor to the laser, at to the observation of large nuclear quadrupole moments, which led to the introduction of the unified nuclear model by James Rainwater.
12.
Current nuclear models suggest that four separate neutrons should result when beryllium-10 is produced, but the single signal detected in the production of beryllium-10 suggested a multineutron cluster in the breakup products; most likely a beryllium-10 nucleus and four neutrons fused together into a tetraneutron.
