Extracting ion beam for modification of thermal,optical and structural properties of Bayfol Nuclear Track Detector.

Abstract

In the present work, The effects of 28 GeV 56Fe and 13.72 GeV 28Si ion irradiation on the structural properties of two types of Bayfol, namely DPF 5023 and CR 1-4 polycarbonates have been investigated. It is worth mentioning that this report is almost the first ones dealing with that topic of materials changes in such high energy range. Samples from each type of Bayfol were classified into two groups. The first group have been exposed to Fe fluences at levels between 2000 and 8000 ion/cm2. The second group have been exposed to Si ions with similar fluences. The totally energy deposited is between (27.44 and 224) E12 eV. The modifications induced in Bayfol samples due to ion irradiation have been studied using X-ray diffraction XRD and Fourier Transform Infrared spectroscopy FTIR. The results indicate that the Fe ion irradiation causes crosslinking in Bayfol DPF 5023, reflected in a decrease in the ordering character. Also, the tendency of Bayfol CR 1-4 to crosslinking due to Fe ion irradiation is lower than that of Bayfol DPF 5023. On the other hand, the Si ion irradiation causes mainly chain scission at the carbonate site of both types of Bayfol associated with the formation of hydroxyl group.