Nouh S A, Gaballah N, Abou Elfadl A, Alsharif S A
Physics Department, Faculty of Science, Taibah University, Al-Madina al Munawarah, Saudi Arabia.
Physics Department, Faculty of Science, Ain Shams University, Cairo, Egypt.
Radiat Prot Dosimetry. 2019 Jun 1;183(4):449-458. doi: 10.1093/rpd/ncy165.
Bayfol is a class of polymeric solid state nuclear track detector which has many applications in various radiation detection fields. It is a Makrofol polycarbonate/polyester blend. Samples from Bayfol film have been irradiated with different fluences (1011-1014 p/cm2) of 1 MeV protons at the University of Surrey Ion Beam Center, UK. The resultant effect of proton irradiation on the structural and optical properties of the Bayfol samples has been investigated using X-ray diffraction, Fourier Transform Infrared and UV spectroscopy. The optical energy gap was decreased from 4.24 to 4.03 eV with increasing the proton fluence from 1011 to 1013 p/cm2, and was accompanied by an increase in the Urbach energy from 0.79 to 1.29 eV. This could be correlated to the results obtained from XRD and FTIR spectroscopy. Further, the non-irradiated Bayfol is nearly colorless. It showed significant sensitivity to color by proton irradiation, associated with an increase in the red and yellow color components. The variation of optical and color parameters with the proton fluence indicate that the dynamic range of Bayfol UV1 7-2 is in the fluence range from 1011 to 1013 p/cm2.
Bayfol是一类聚合物固态核径迹探测器，在各种辐射探测领域有许多应用。它是一种Makrofol聚碳酸酯/聚酯共混物。英国萨里大学离子束中心用不同注量（10¹¹ - 10¹⁴ p/cm²）的1兆电子伏特质子辐照了Bayfol薄膜样品。利用X射线衍射、傅里叶变换红外光谱和紫外光谱研究了质子辐照对Bayfol样品结构和光学性质的影响。随着质子注量从10¹¹增加到10¹³ p/cm²，光学能隙从4.24电子伏特降至4.03电子伏特，同时乌尔巴赫能量从0.79电子伏特增加到1.29电子伏特。这可能与XRD和FTIR光谱得到的结果相关。此外，未辐照的Bayfol几乎是无色的。它对质子辐照引起的颜色表现出显著的敏感性，伴随着红色和黄色成分的增加。光学和颜色参数随质子注量的变化表明，Bayfol UV1 7 - 2的动态范围在10¹¹到10¹³ p/cm²的注量范围内。
