track detector;
CR-39/NIPAAm copolymer;
proton response;
high sensitivity;
D O I:
10.1016/S1350-4487(97)00067-X
中图分类号:
TL [原子能技术];
O571 [原子核物理学];
学科分类号:
0827 ;
082701 ;
摘要:
We studied the track response for the copolymer of CR-39 monomer with N-isopropylacrylamide (NIPAAm) as well as etching properties. It was found that copoly (CR-39/NIPAAm/Naugard 445) composed in weight ratio of 99/1/0.01 is highly sensitive to low LET particles in the region below 10 keV/mu m of LET200 eV and able to record normally incident particles of LET200 eV down to similar to 1.5 keV/mu m, recording protons up to the energy of 27 MeV. These results were compared with the responses for two types of CR-39 detectors containing a small quantity of antioxidant. The threshold energy of proton registration is discussed.