Simulation of Neutron Pulse Height Distributions with a Response Matrix Method

被引：3

作者：

Prasad, S. ^{[1
]}

Clarke, S. D. ^{[1
]}

Pozzi, S. A. ^{[1
]}

Larsen, E. W. ^{[1
]}

机构：

[1] Univ Michigan, Dept Nucl Engn & Radiol Sci, Ann Arbor, MI 48109 USA

来源：

NUCLEAR SCIENCE AND ENGINEERING | 2012年 / 172卷 / 01期

关键词：

SPECTROMETRY; SCINTILLATOR;

D O I：

10.13182/NSE11-60

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 response matrix method (RMM) is applied to Monte Carlo simulations to efficiently compute neutron pulse height distributions (PHDs) in organic scintillation detectors. The PHD calculations and their associated uncertainty are compared for a polyethylene-shielded and lead-shielded Cf-252 source for three different techniques: fully analog MCNPX-PoliMi. the RMM, and the RMM with source biasing. The RMM with source biasing reduces computation time or improves the figure of merit on average by a factor of 600 for polyethylene shielding and a factor of 300 for lead shielding (when compared to the fully analog calculation). The simulated neutron PHDs show good agreement with the laboratory measurements, thereby validating the RMM.

引用

页码：78 / 86

页数：9

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