Determination of natural uranium fission rate in fast spallation and fission neutron field: An experimental and Monte Carlo study

被引：27

作者：

Hashemi-Nezhad, S. R. ^{[1
]}

Zhuk, Igor ^{[2
]}

Kievets, A. ^{[2
]}

Krivopustov, M. I. ^{[4
]}

Sosnin, A. N. ^{[4
]}

Westmeier, W. ^{[3
]}

Brandt, R. ^{[3
]}

机构：

[1] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia

[2] Joint Inst Power & Nucl Res Sosny NASB, Minsk 22109, BELARUS

[3] Univ Marburg, Fachbereich Chem, D-3550 Marburg, Germany

[4] Joint Inst Nucl Res, Dubna 141980, Russia

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2008年 / 591卷 / 03期

关键词：

accelerator-driven systems; natural uranium fission; proton-induced fission; pion-induced fission; photon-induced fission; MCNPX code;

D O I：

10.1016/j.nima.2008.02.101

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The "Energy plus Transmutation" experimental setup of the Joint Institute for Nuclear Research (JINR), Dubna, Russia, is a lead target surrounded by a natural uranium blanket. A polyethylene plus cadmium shield is placed around the target-blanket assembly to modify the spallation and fission neutron spectra in the system. In this work the spatial distribution of natural uranium fission rate in the assembly and fission rate in the blanket were determined experimentally and compared with Monte Carlo predictions using the MCNPX 2.6C code. Besides neutron-induced fission the calculations include the reactions U-Nat(p, f), U-Nat(pi, f) and U-Nat(gamma, f). Good agreements between the experimental and calculations results were obtained. The possible sources of errors in the experiment and calculations are discussed in detail. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：517 / 529

页数：13

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