Systems based on fast neutron detectors have the potential to significantly reduce the time required to assay items containing SNM when compared with thermal, He3 based, systems. This poster will give an overview of a prototype fast neutron assay system being developed by AWE. The system uses an array of EJ309 liquid scintillator detectors and XIA Pixie4express electronics to carry out pulse...
We examine the feasibility of inferring the internal geometry of an object based on passive measurements of the radiation emitted by that object. The approach taken in this paper is one designed to produce the radiation source density as well as the attenuation of the materials making up the object, herein referred to as f and a respectively. We refer to this problem, of recovering a and f...
