1. As Low As Reasonably Achievable
2. The time it takes onehalf of the atoms of a radioisotope to decay by emitting radiation
3. Materials capable of undergoing fission on interaction with neutrons, eg U 235, Pu 239
4. High energy waves that can travel great distances at the speed of light and generally have a great ability to penetrate other materials
5. Negative charge, orbits outside the nucleus, 11840 of the mass of a proton or a neutron, smallest particle
6. Example of access control
X
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