Radiation Protection Glossary
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The neutrino is a particle with no mass or charge. It is emitted during Beta
decay during the emission of a beta particle. It has no great significance with respect to Radiation Protection
but great interest still remains in its properties.
The neutron is a constituent of the Nucleus
of an Atom
and has an Atomic Mass
unit of 1 (identical mass to a Proton
). Unlike protons, the neutron does not carry an electrical charge. Its electrical neutrality allows it to take part in many types of nuclear reactions because it is not deflected by the positive charge of the protons. Neutrons are not themselves Ionising
, but the by-products of their interactions are (in simple terms their interactions take the form of collisions with other sub-atomic particles where energy is transferred).
Non-ionising radiation dose not have the ability to Ionise
matter it interacts with. Examples include radiowaves and microwaves.
The nucleus contains positively charged Protons
and neutral Neutrons
which are bound by nuclear forces. The nucleus makes up the central portion of an Atom
and is surrounded by orbiting Electrons
. (This description is much simplified but serves its purposes for most practical Radiation Protection
A nuclide describes an Atom
who's properties are a function of the number of Protons
contained in the Nucleus
. A nuclide does not have to be Radioactive
, if it is then its known as a Radionuclide