CR-39 plastic nuclear track detectors have been cast with no additive and with methyl methacrylate
diallyl phthalate
dibutyl phthalate and di-(2-ethylthexyl) phthalate. After irradiated with 5.15 MeV a particles
the responses of the detectors were found to be significantly different for each kind of additive. The performance was reported of a new CSR solid state nuclear track detector
the CR-39 (DPA). The sheets with 1 % addition of DPA of CR-39 monomer were more sensitive than those of pure CR-39.