ANISOTROPIC ANGLE BIASING OF PHOTONS

被引：20

作者：

HENDRICKS, JS ^{[1
]}

CARTER, LL ^{[1
]}

机构：

[1] WESTINGHOUSE HANFORD CO,RICHLAND,WA 99352

来源：

NUCLEAR SCIENCE AND ENGINEERING | 1985年 / 89卷 / 02期

关键词：

MATHEMATICAL STATISTICS - Monte Carlo Methods - PHYSICS - Nuclear;

D O I：

10.13182/NSE85-A18186

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

A synergistic method is described for the angle biasing of anisotropic scattering kernels in Monte Carlo calculations. The method generalizes S. R. Dwivedi's suggestion of using the exponential transform to cancel the undesirable fluctuations of angle biasing. Only photons are examined because the biasing of the Klein-Nishina scattering kernel can be treated analytically in contrast to more general neutron scattering kernels, which would require a numerical treatment. Three-dimensional continuous-energy results indicate that angle biasing in conjunction with the exponential transform is better than either by itself and greatly enhances Monte Carlo transport for the cases shown.

引用

页码：118 / 130

页数：13