Radioactive sources
- A laboratory source of neutrons consists of a mixture of an a
emitter and light nuclei, such as beryllium, boron or
flourine. The most common of these is the a
Be source.
a + 9Be ®
12C + n + 5.7 MeV
- A beam of thermal neutrons may be obtained by surrounding the
source with water, paraffin or other hydrogenous material.
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