Gamage, Kelum and Zhou, Qi and Hayes, Sean (2015) Hexagonal uniformly redundant arrays (HURAs) for scintillator based coded aperture neutron imaging. In: IEEE Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA-2015), 2015-04-202015-04-24.
Abstract
A series of Monte Carlo simulations have been conducted, making use of the EJ-426 neutron scintillator detector, to investigate the potential of using hexagonal uniformly redundant arrays (HURAs) for scintillator based coded aperture neutron imaging. This type of scintillator material has a low sensitivity to gamma rays, therefore, is of particular use in a system with a source that emits both neutrons and gamma rays. The simulations used an AmBe source, neutron images have been produced using different coded-aperture materials (boron-10, cadmium-113 and gadolinium-157) and location error has also been estimated. In each case the neutron image clearly shows the location of the source with a relatively small location error. Neutron images with high resolution can be easily used to identify and locate nuclear materials precisely in nuclear security and nuclear decommissioning applications.