The ions are formed close to a single extraction plate and exit the ionizer. The "ionizer" converts a portion of the sample into ions. Once out of the target, the vapour of radioactive atoms travels to an ionizer cavity. Another device described as 'electronic' is the 'Electronic Engine Ionizer Fuel Saver'. Cylindrical and axially symmetrical, this kind of ionizer has been around since the early 1950s. Cool with Ionizer in the same year.