activated atom

ac·ti·vat·ed at·om

an atom possessing supernormal energy as a result of energy inputs.
See also: excited state.
Synonym(s): excited atom
References in periodicals archive ?
This would then be followed by an exothermic step involving the expulsion of an activated atom, [CHS-HA.sup.*] [right arrow] CHS-H + [A.sup.*], followed by the line emission from [A.sup.*], [A.sup.*] [right arrow] A + hv.