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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Free Radical

Free radicals can be formed in biological materials (e.g. DNA) when they undergo Ionisation (by interaction with Ionising Radiation). The free radical can be thought of as a reactive charged molecule which will readily combine with other cell constituents. A typical example is the ionisation of water which will produce H+ and OH- ions which can further react to produce Hydrogen Peroxide, which is highly oxidising and potentially very damaging to DNA.

Education is what remains after one has forgotten what one has learned in school

– Albert Einstein