Basic performance of a neutron sensitive photostimulated luminescence device for neutron radiography

Basic performances of an imaging plate for neutron detection (NIP) are studied. The shape of the line spread function (LSF) was approximated to be Lorentzian through the Fourier analysis of edge spread function (ESF). The FWHM of the LSF was estimated to be 58.6±7.6 μm. Five decades of linearity was proven for the NIP as expected. A single neutron onto a pixel of 50 μm square corresponding to 4.5×104 n/cm2 could be detected with 100% standard deviation. Repeatable readout characteristics were also studied. As one example of an advanced application, a synthesized imaging technique is studied to describe the ratio of two cross sections for two different IP images photographed by thermal neutrons and X-ray beams, respectively.