Fast neutron
Fast Neutron
Fast neutron (/fɑːst ˈniːtrɒn/) is a type of neutron that is characterized by high energy levels, typically above 1 MeV. They are named 'fast' due to their high speed and energy, which is a result of their high temperature or from a neutron source that produces high-energy neutrons.
Etymology
The term "fast neutron" originates from the speed at which these particles move. In nuclear physics, neutrons are classified according to their kinetic energy. Fast neutrons are those with energies above 1 MeV, which translates to speeds of about 14,000 kilometers per second.
Related Terms
- Neutron: A subatomic particle found in the nucleus of atoms. It has no electric charge and a mass slightly larger than that of a proton.
- Neutron Source: A device that emits neutrons, irrespective of the mechanism used to produce the neutrons.
- Neutron Therapy: A type of radiation therapy which uses fast neutrons for treating cancer.
- Neutron Spectrometer: An instrument used to measure the distribution of neutron's energy.
- Neutron Capture: A nuclear reaction in which an atomic nucleus absorbs a neutron and forms a heavier nucleus.
Applications
Fast neutrons are used in neutron therapy, a kind of radiation therapy for treating cancer. They are also used in nuclear reactors for the process of nuclear fission. Fast neutron detectors are used in nuclear physics research and in radiation protection.
See Also
External links
- Medical encyclopedia article on Fast neutron
- Wikipedia's article - Fast neutron
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