Neutron emission
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Neutron emission is a type of radioactive decay of atoms containing excess neutrons, in which a neutron is simply ejected from the nucleus. Two examples of isotopes which emit neutrons are helium-5 and beryllium-13. However, the decay of helium-5 is also (by definition) a case of alpha-decay.
Many heavy isotopes, most notably californium-252, emit neutrons among the products of a different radioactive decay process, spontaneous fission.
Neutrons are absorbed and emitted in the process of nuclear fission, a nuclear chain reaction propagated by neutrons. Delayed neutrons emitted by neutron-rich fission products aid control of nuclear reactors by making reactivity change much slower than it would be for prompt neutrons alone.
See also
Nuclear processes | |
|---|---|
| Radioactive decay | Alpha decay · Beta decay · Gamma radiation · Cluster decay · Double beta decay · Double electron capture · Internal conversion · Isomeric transition · Spontaneous fission |
| Other processes | Emission processes: Neutron emission · Positron emission · Proton emission Capturing: Electron capture · Neutron capture |
| Stellar nucleosynthesis | pp-Chain · CNO cycle · α process · Triple-α · Carbon burning · Ne burning · O burning · Si burning · R-process · S-process · P-process · Rp-process |
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