Comparison of SEM and optical analyses of DT neutron tracks in CR-39 detectors

A solid state nuclear track detector, CR-39, was exposed to DT neutrons. After etching, the resultant tracks were analyzed using both an optical microscope and a scanning electron microscope (SEM). In this communication, both methods of analyzing DT neutron tracks are discussed.

► Optical and SEM analyses of DT neutron tracks.
► SEM images are inherently 3-D and can be obtained at higher magnifications than optical images.
► The two methods of analysis are complementary.
► Track modeling can be done to estimate the energy of the incident neutron that causes the carbon break-up reaction.