热峰模型在聚碳酸酯非晶化潜径迹中的应用

为了描述快重离子在聚合物中的潜径迹行为，用不同能量的快重离子 (1158GeVFe5656,1755GeVXe136¹³⁶及2636GeVU238²³⁸) 辐照 叠层半结晶聚碳酸酯膜 (Makrofol KG型)，结合x射线衍射测量技术，在较宽的电子能损 (1 9—171keV/nm)和离子注量（5×1010¹⁰—3×1012¹² cm-2^-2）范围研究了离子在半 关键词： 离子辐照 聚碳酸酯 非晶化 潜径迹

Application of the thermal spike model to amorphous latent tracks in polycarbona te

To describe the damage process of polymer in the energetic heavy-ion tracks by thermal spike model, polycarbonate foil (PC，Makrofol KG) stacks were irradiated with various swift heavy ions (1158GeVFe56⁵⁶, 1755GeVXe13 6¹³⁶ and 2636GeVU238²³⁸) in a very wide range of ele ctronic stopping power (from 19 to 171keV/nm) and the range of fluence fro m 1×1010¹⁰ to 3×1012¹²ions/cm2². The amorphization processes in the irradiated PC were studied by x-ray diffraction. By using the saturated track model (the damaging process only occur in the cyli ndrical track of area σ), the mean damage radii of tracks of the amorphization were calculated for Fe, Xe and U ion irradiation. The results obtained by using the thermal spike model, proved to be reasonable.