提高物理数据库精度的算法和参数
Algorithms and parameters for improved accuracy in physics data libraries
摘要：
总结了近年来为提高粒子输运物理数据库精度所做的努力。本文报道了对主要蒙特卡罗系统（Geant 4、EGS、MCNP、Penelope等）所用原子参数的大规模验证分析结果;它们对模拟观测量的准确性的贡献被记录。这项研究的结果激励了一个新的原子数据管理软件包的开发，该软件包优化了向物理模型提供最先进的原子参数。说明了原子参数对放射性衰变模拟的影响。讨论了在数据库的生产过程中，而不是在运行时，处理适用于不同能量范围的物理模型的思想和方法。
英文摘要：
Recent efforts for the improvement of the accuracy of physics data libraries used in particle transport are summarized. Results are reported about a large scale validation analysis of atomic parameters used by major Monte Carlo systems (Geant4, EGS, MCNP, Penelope etc.); their contribution to the accuracy of simulation observables is documented. The results of this study motivated the development of a new atomic data management software package, which optimizes the provision of state-of-the-art atomic parameters to physics models. The effect of atomic parameters on the simulation of radioactive decay is illustrated. Ideas and methods to deal with physics models applicable to different energy ranges in the production of data libraries, rather than at runtime, are discussed.
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