On the optimization of the isotopic neutron source method for measuring the thermal neutron absorption cross section:: Advantages and disadvantages of BF3 and 3He counters

被引：11
|
作者：
Bolewski, A., Jr. [1 ]
Ciechanowski, M. [1 ]
Dydejczyk, A. [1 ]
Kreft, A. [1 ]
机构：
[1] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, PL-3059 Krakow, Poland
来源：
APPLIED RADIATION AND ISOTOPES | 2008年 / 66卷 / 04期
关键词：
thermal neutron absorption; sensitivity; MCNP; BF3; counter; He-3;
D O I：
10.1016/j.apradiso.2007.10.010
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The effect of the detector characteristics on the performance of an isotopic neutron source device for measuring thermal neutron absorption cross section (Sigma) has been examined by means of Monte Carlo simulations. Three specific experimental arrangements, alternately with BF3 counters and He-3 counters of the same sizes, have been modelled using the MCNP-4C code. Results of Monte Carlo calculations show that devices with BF3 counters are more sensitive to Sigma, but high-pressure He-3 counters offer faster assays. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：457 / 462
页数：6
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