Accurate determination of cross-sections for 238U (n, 2n) 237U induced by neutrons around 14 MeV

被引：8

作者：

Wang, Xianggao ^{[1
,2
]}

Jiang, Shan ^{[1
]}

He, Ming ^{[1
]}

Dong, Kejun ^{[1
]}

Xiao, Caijing ^{[1
]}

机构：

[1] China Inst Atom Energy, Beijing 102413, Peoples R China

[2] Guangxi Univ, Coll Phys Sci & Technol, Nanning 530004, Peoples R China

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2010年 / 621卷 / 1-3期

关键词：

U-238(n; 2n)U-237; cross-section; Self-attenuation; Lu-177-spiking method; N; 2N REACTIONS;

D O I：

10.1016/j.nima.2010.04.034

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The cross-sections of U-238 (n, 2n) U-237 induced by neutrons with energies around 14 MeV were determined by measuring the emission rate of 208.00 key gamma-rays from U-237 decay with an accurately calibrated HPGe gamma-ray spectrometer at CIAE. In order to correct for the self-attenuation of 208.0 keV gamma-ray in U sample, a Lu-177-spiking method was introduced. As a result, a total relative standard uncertainty of 2.5% was achieved for the measured cross-section values. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：326 / 330

页数：5

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