|Irradiation of etnnographic material|
View through a porthole of the irradiation cell of the Art-Nucleart laboratory in Grenoble. In the back, rods of the caesium-60 cell can be seen. The porthole is made of lead glass. This lead glass wall is thick enough to absorb the cobalt-60 gamma rays, allowing to follow without danger the operation. Gauges allow also to follow the amount of irradiation sustained by the objects, their temperature and eventually modify by remote control the source position.