Discrete angle biasing in Monte Carlo radiation transport
Discrete angle biasing in Monte Carlo radiation transport
复制标题
蒙特卡罗辐射传输中的离散角度偏置
DOI：
10.13182/nse88-a23530
复制
发表时间：
1988
期刊：
影响因子：
--
通讯作者：
S. N. Cramer
中科院分区：
文献类型：
--
作者：
S. N. Cramer
本文提出了一种角偏置方法，用于离散散射角数据的蒙特卡罗辐射输运。在更一般的研究中，该方法被证明可以减少统计权重波动时，它是与指数变换相结合。这个离散数据应用程序有一个简单的分析形式，是独立的问题。一个算例的计算结果说明了组合偏置方法的方差减小和效率特性，并计算了一个大型中子和γ射线积分实验。给出了偏置参数ρ和优先方向的可能代码生成的建议。cap omega../ sub 0/在组合偏置方案中使用。
An angular biasing procedure is presented for use in Monte Carlo radiation transport with discretized scattering angle data. As in more general studies, the method is shown to reduce statistical weight fluctuations when it is combined with the exponential transformation. This discrete data application has a simple analytic form that is problem independent. The results from a sample problem illustrate the variance reduction and efficiency characteristics of the combined biasing procedures, and a large neutron and gamma-ray integral experiment is also calculated. A proposal is given for the possible code generation of the biasing parameter rho and the preferential direction ..cap omega../sub 0/ used in the combined biasing schemes.