To provide a dangerous matter detecting system having a neutron radiating means suitable for installation in places where a luggage conveyor is installed and many people gather, such as terminal gates of airport or sea ports.
In a dangerous matter detecting system 1 having a conveyor 10 and a nuclear substance detecting device 30 installed midway on the conveyance route of the conveyor 10, the nuclear substance detecting device 30 has a neutron generator 31 that radially emits neutrons and a cylindrical side wall 32 arranged with some spacing from the neutron generator 31 in that emitting direction, the system further having a neutron intercepting wall 35 provided with doors 34a and 34b for opening and closing a luggage inlet 33a and a luggage outlet 33b, respectively, formed in the side wall 32 and a rotary floor 36 provided between the neutron generator 31 and the side wall 32 to be rotatable around the neutron generator 31 and supporting multiple units of luggage with spacing between each other in its rotating direction.
MIYAUCHI YASUYUKI
NABEMOTO TOYONOBU
