Pulse-height distributions of neutron and gamma rays from plutonium-oxide samples

被引：33

作者：

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

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

Flaska, M. ^{[1
]}

Peerani, P. ^{[2
]}

机构：

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

[2] IPSC, JRC, EC, Ispra, Italy

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2009年 / 608卷 / 02期

关键词：

Liquid scintillator; Neutron pulse-height distribution; Pulse shape discrimination; Digital data processing; Plutonium oxide; (252)Cf; CODE;

D O I：

10.1016/j.nima.2009.07.007

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We present new results on neutron and gamma-ray pulse-height distributions (PHDs) measured with liquid scintillators from five plutonium-oxide samples of varying mass and burnup and a (252)Cf isotopic source. We show that the analysis of the pulse-height distributions can be used to easily distinguish the fissile material (plutonium oxide) from the 252Cf source. Moreover, the slope of the measured pulse-height distributions can be analyzed to distinguish the burnup of the samples, independent of their masses. Finally, the measurement scenarios are modeled using the MCNP-PoliMi code and good agreement is observed between the measured and the simulated pulse-height distributions. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：310 / 315

页数：6

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