标题： 银河系中超高能宇宙射线的传播 显示英文标题

标题： Propagation of super high-energy cosmic rays in the Galaxy

摘要： 高能宇宙射线在银河系中的传播得到研究。 扩散模型的解与粒子的数值计算轨迹相结合。 给出了相应的逃逸路径长度和相互作用路径长度，并讨论了在地球处获得的能量谱。 结果表明，由于传播过程中的核相互作用，重元素的能量谱应比轻元素更平坦。 获得的超重元素的传播特性表明，这些元素可能在解释约400 PeV处宇宙射线能量谱的第二膝中起重要作用。 显示英文摘要

摘要： The propagation of high-energy cosmic rays in the Galaxy is investigated. Solutions of a diffusion model are combined with numerically calculated trajectories of particles. The resulting escape path length and interaction path length are presented and energy spectra obtained at Earth are discussed. It is shown that the energy spectra for heavy elements should be flatter as compared to light ones due to nuclear interactions during the propagation process. The obtained propagation properties of ultra-heavy elements indicate that these elements could play an important role for the explanation of the second knee in the cosmic-ray energy spectrum around 400 PeV.