Radiation Protection Glossary
Search the Glossary by either clicking on a letter or typing a Keyword into the search box.
The electron is a low mass particle ( 1/1836 that of a
Proton ) with a unit negative electric charge. In simple terms the electrons are said to orbit around the
Nucleus of
Atoms . Positively charged electrons can also exist, these being known as
Positrons . The electron is closely related (identical in fact) to the
Beta Particle .