| http://www.w3.org/ns/prov#value | - Due the presence of free neutron beryllium-9 has a large scattering cross section for high-energy neutrons, during which it undergoes a (n,2n) neutron reaction to 8Be, which then instantaneously breaks into two alpha particles; that is, beryllium is a neutron multiplier, releasing more neutrons than it absorbs.
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