Imaging of fast-neutron sources using solid-state track-recorder pinhole radiography

Pinhole imaging methods were tested for potential future use in imaging the intense neutron source of the fusion materials irradiation test (FMIT) facility. Calibration measurements of the proton, neutron, and alpha particle response characteristics of CR-39 polymer solid state track reorders (SSTRs) are used to interpret the results of imaging experiments using both charged particle and neutron pinhole collimators. High resolution, neutron pinhole images of a (252) Cf source were obtained in the form of neutron induced proton recoil tracks in CR-39 polymer SSTR. The imaging experiments and their potential future applications to FMIT are described.