Use of a COTS X-ray scanner for 2-D neutron activation analysis

Results from the use of a commercial, off-the-shelf X-ray scanner using storage phosphors to measure neutron activation in 1- and 2-D are presented. The technique consists of irradiating thin foils or wires of various elements, then placing the activated material on the storage phosphors to expose them. The amount of exposure is proportional to the activation obtained. Examples of wires, small foils, and large area foils with asymmetric irradiation using critical assemblies are presented. Combined with isotope-specific gamma counting of the entire foil or wire, the technique offers a simple way to obtain both qualitative and quantitative 2-D activation information.