Abstract In order to model the activated isotopes and resulting dose from a nuclear detonation in an urban environment, the Activation and Transmutation of Isotopes in an Unstructured Mesh (ACTIUM) Python toolkit has been developed to combine the unstructured mesh–based particle transport capability of MCNP6.2 with the CINDER2008 transmutation code to produce quantities of interest for the post-detonation nuclear forensics and weapons effects communities. The ACTIUM toolkit has been implemented and validated with a number of test cases from a simple analytic model to a case study of the urban detonation in Nagasaki, Japan. The ACTIUM approach is the first of its kind to couple the latest release of CINDER2008 as a part of the Activation in Accelerator Radiation Environments (AARE) package with MCNP6.2 and produce transmuted quantities per time step on an unstructured mesh for the nuclear forensics and weapon effects communities. ACTIUM uses the latest ENDF/B-VIII.0, TENDL2017, and JENDL4 cross-section libraries for the transmutation calculations and includes methods for producing material cards for the initial MCNP6.2 unstructured mesh calculation based on highly detailed materials often found in urban environments on a city-specific basis.

中文翻译：

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基于非结构化网格的变换工具包的 Hiroshima 和 Nagasaki 验证

摘要 为了模拟城市环境中核爆炸的活化同位素和产生的剂量，开发了非结构化网格中同位素的活化和嬗变 (ACTIUM) Python 工具包，以结合 MCNP6 基于非结构化网格的粒子传输能力。 .2 使用 CINDER2008 嬗变代码为爆炸后核取证和武器效应社区产生感兴趣的数量。从简单的分析模型到日本长崎城市爆炸的案例研究，ACTIUM 工具包已经实施和验证了许多测试案例。ACTIUM 方法是首次将最新版本的 CINDER2008 作为加速器辐射环境中的激活 (AARE) 包的一部分与 MCNP6 结合使用。2 并在非结构化网格上为核取证和武器效果社区在每个时间步长上产生嬗变量。ACTIUM 使用最新的 ENDF/B-VIII.0、TENDL2017 和 JENDL4 横截面库进行嬗变计算，并包括基于城市环境中常见的高度详细材料为初始 MCNP6.2 非结构化网格计算生成材料卡的方法在特定城市的基础上。