Device for detecting fissionable material

摘要

A device for detecting fissionable material including a neutron source, two parallelepipedal panels placed on a support and forming a dihedral with an adjustable opening. The dihedral has an edge centered on the neutron source, and the panels consist of solid modules made of a material able to thermalize the neutrons and of a module of the same material in which a unit for detecting fission neutrons is housed. This detection unit is located at the end opposite the neutron source, and the object to be checked is placed between the two panels. The device has application to the checking of nuclear waste.