论文标题
质子的同位素生产横截面的能源依赖性模型 - $^{16} $ o互动
Energy Dependent Model of Isotopic Production Cross Sections from Proton-$^{16}$O Interactions
论文作者
论文摘要
质子与$^{16} $ o核是最常见的核相互作用，导致在质子上进行空间辐射和癌症治疗的组织中的二次辐射。此外，$^{16} $ O具有最大的银河宇宙射线，并且在组织或水和聚乙烯屏蔽中与氢相互作用。氧的碎片产生大量的重离子（a> 4）靶碎片（TF），其电离密度高。在这里，我们开发了一个依赖能量质子的分析模型-U $^{16} $ o横截面。我们将校正用于测量总电荷变化横截面，以扩展有关核吸收横截面的数据。使用实验数据和2阶光学模型，可获得从<10 meV/n到> 10 GEV/N的P-$^{16} $ O吸收横截面的精确公式。同位素横截面的能量依赖性被建模为缩放到吸收横截面的多重性，从而在整个能量范围内产生了准确的模型。
Proton interactions with $^{16}$O nuclei are the most frequent nuclear interaction leading to secondary radiation in tissues for space radiation and cancer therapy with protons. In addition, $^{16}$O has the largest fluence of galactic cosmic rays, and interacts with hydrogen in tissue or water and polyethylene shielding. The fragmentation of oxygen produces a large number of heavy ion (A>4) target fragments (TF) with high ionization density. Here we develop an analytical model of energy dependent proton-$^{16}$O cross sections. We introduce corrections to measurements of total charge changing cross sections to extend data on nuclear absorption cross sections. Using experimental data and a 2nd order optical model an accurate formula for the p-$^{16}$O absorption cross section from <10 MeV/n to >10 GeV/N is obtained. The energy dependence of the isotopic cross sections is modeled as multiplicities scaled to absorption cross section resulting in an accurate model over the full energy range.
