Radiation Protection Glossary

A radiation protection glossary for Radiation Protection Supervisors (RPS) and anyone interesting in radiation safety terminology. The glossary is a mixture of health physics terms, and phrases related to radiation legislation, transport, practical safety and similar.

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Distance

Distance, in the context of Radiation Protection, relates to one of the three key principles of protection against External Radiation hazards (i.e. Time, Distance & Shielding). In simple terms, increasing the distance between a static source of Ionising Radiation and the absorbing medium (e.g. a person) will reduce the exposure to that person. For certain defined geometries, (e.g. Point Source), the Inverse Square law can be applied which can be stated as: 'double the distance, quarter the dose'.

What's the matter? What's the antimatter? Does it antimatter?

– Wes Nisker