Abstract: Detecting diversion of spent fuel from Pressurized Water Reactors (PWR) by determining possible diversion including the steps of providing a detector cluster containing gamma ray and neutron detectors, inserting the detector cluster containing the gamma ray and neutron detectors into the spent fuel assembly through the guide tube holes in the spent fuel assembly, measuring gamma ray and neutron radiation responses of the gamma ray and neutron detectors in the guide tube holes, processing the gamma ray and neutron radiation responses at the guide tube locations by normalizing them to the maximum value among each set of responses and taking the ratio of the gamma ray and neutron responses at the guide tube locations and normalizing the ratios to the maximum value among them and producing three signatures, gamma, neutron, and gamma-neutron ratio, based on these normalized values, and producing an output that consists of these signatures that can indicate possible diversion of the pins from the spent fuel assembl

Abstract: Detecting diversion of spent fuel from Pressurized Water Reactors (PWR) by determining possible diversion including the steps of providing a detector cluster containing gamma ray and neutron detectors, inserting the detector cluster containing the gamma ray and neutron detectors into the spent fuel assembly through the guide tube holes in the spent fuel assembly, measuring gamma ray and neutron radiation responses of the gamma ray and neutron detectors in the guide tube holes, processing the gamma ray and neutron radiation responses at the guide tube locations by normalizing them to the maximum value among each set of responses and taking the ratio of the gamma ray and neutron responses at the guide tube locations and normalizing the ratios to the maximum value among them and producing three signatures, gamma, neutron, and gamma-neutron ratio, based on these normalized values, and producing an output that consists of these signatures that can indicate possible diversion of the pins from the spent fuel assembl

Abstract: An x-ray backscatter tomography system includes a collimated x-ray source for directing a collimated beam towards a target at a select position and orientation, a first detector array for measuring photons scattered at a selected first angle, and a second detector array for measuring photons scattered at a selected second angle different from the first angle. The system is also responsive to the first and second detectors for calculating the density and atomic number of the target.

Abstract: A simulated ball sport amusement instrument for optionally playing one of several different games. The instrument has a rectangular frame with vertical side and end walls. A plurality of hitting units are supported by the walls and have hitting surfaces disposed within the interior of the frame. Handle levers are connected to ends of the hitting units to control movement of the hitting surfaces. Holes are provided on the tops of the walls for receiving poles of football or basketball goals, or poles of a net for volleyball. In one embodiment, the interior of the frame is divided by a grille that has a plurality of openings in which the hitting surfaces of the hitting units are positioned. The dimensions of the grille openings are smaller than a ball used with the instrument so that the ball is prevented from falling through the playing surface and is always in a position to be hit by one of the hitting units.

Abstract: A baseball game apparatus having a body with a top surface and a bottom surface, interconnected by first and second side surfaces. A plurality of vertically stacked plates defining stage fields are positioned at one end of the body. Side portions of the top surface are spaced from the side surfaces to define foul ball openings so that balls can fall from the top surface to the bottom surface. A portion of the bottom surface forms a ball collecting portion and the bottom surface is shaped or sloped to direct balls to the ball collecting portion. An opening is formed in a central portion of the top surface at a position spaced from the stage fields, the opening having a first portion for the passage of a bat and a second portion for the passage of the bat and a ball, which ball strikes a sounder on the bottom surface.