Improved criterion of the mechanism for forming latent tracks in poly(allyl diglycol carbonate) based on the number of interactions induced by secondary electrons
Improved criterion of the mechanism for forming latent tracks in poly(allyl diglycol carbonate) based on the number of interactions induced by secondary electrons
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DOI：
10.1016/j.radmeas.2020.106445
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发表时间：
2020-11-01
影响因子：
2
通讯作者：
Kodaira, Satoshi
中科院分区：
文献类型：
--
作者：
Kusumoto, Tamon;Barillon, Remi;Kodaira, Satoshi
在本研究中，我们表示Poly(Ally！)的航迹响应数据。二甘醇碳酸酯)(PADC)，使用由二次电子引起的与阻止介质的相互作用的次数。在Geant4-DNA中用蒙特卡罗模拟程序计算了二次电子诱导的相互作用数(NISE)。NISE对径迹响应数据的描述比以前基于离子径迹周围的阻止功率和径向电子通量(REFIT)的描述有所改进。我们还模拟了质子和重离子(He，C，Fe)辐照的PADC中碳酸酯键的去除截面。辐射氧化动力学模型与本研究中得到的估算相结合。即使在低阻止功率区应用辐射氧化动力学模型后，实验结果也与我们目前的模拟结果存在差异(
In this study, we represent the track response data of poly (ally! diglycol carbonate) (PADC) using the number of interactions with the stopping medium induced by secondary electrons. The Number of Interactions induced by Secondary Electrons (NISE) is calculated using a Monte Carlo simulation code in Geant4-DNA. The description of the track response data given by NISE is improved compared with those proposed previously based on the stopping power and Radial Electron Fluence around Ion Tracks (REFIT). We also simulate the removal cross sections of the carbonate ester bond in PADC irradiated with protons and heavy ions (He, C, and Fe) based on the NISE. A radiation-oxidation kinetics model is combined with the estimation obtained in the present study. Discrepancies are found between the experimental results and our present simulation even after applying the radiation-oxidation kinetics model in the low stopping power region (