A unit of radiation
; the radiation
produced by a gram
in one second. 1 Ci = 37 billion disintegrations per second (dps
). Also, a quantity of radionuclide
that decays at 37 billion dps.
TMI released about 5 curies; the 1949 Green Run at Hanford released about 11,000 curies. Named for Pierre Curie, husband of Marie Curie.