within a nuclear reactor from a pellet of cobalt 59 being lowered , activated , then immediately removed and stored as a source of radioactivity for a variety of usesis createdwithin a nuclear reactor from a pellet of cobalt 59 being lowered , activated , then immediately removed and stored as a source of radioactivity for a variety of uses
gamma raysto creategamma rays
The contamination was said(passive) to be caused byThe contamination was said
to pinpoint selected treatment areasdesignedto pinpoint selected treatment areas