Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays

Full Title

Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity > Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects > Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays