CSR固体核径迹探测器的掺杂剂选优

Optimization of dopants in CSR solid state nuclear track detector

用CR-39单体并掺入甲基丙烯酸甲酯、苯二甲酸二丙烯酯、邻苯二甲酸丁酯、邻苯二甲酸二(2-乙基己)酯等聚合成不同品种的CR-39塑料核径迹探测器。经5.15MeVα粒子照射试验表明,各种掺杂剂县有不同的效应。在CR-39单体中掺入1％DPA制得的新型CSR固体核径迹探测器具有比原CR～39更高的灵敏度。

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.