Development and test of high efficiency WSF fluorescent converter for fast neutron radiography

被引：2

作者：

Guo, Li'an ^{[1
]}

Zhang, Guohui ^{[1
]}

Zou, Yubin ^{[1
]}

Tang, Guoyou ^{[1
]}

Guo, Zhiyu ^{[1
]}

Xu, Jianguo ^{[1
]}

Guo, Jimei ^{[1
]}

机构：

[1] Peking Univ, Inst Heavy Ion Phys, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2009年 / 598卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Fast neutron radiography; Fluorescent converter; Wavelength-shifting fiber (WSF); TELEVISION CONVERTER;

D O I：

10.1016/j.nima.2008.10.016

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A fluorescent converter used for fast neutron radiography (FNR) was developed by using the Chinese made wavelength-shifting fibers (WSFs) and mixture of hydrogen rich epoxy resin with ZnS(Ag). The performance of the WSF converter compared with that of the epoxy resin converter (ER converter) was tested at the 4.5MV Van de Graaff accelerator of Peking University as fast neutron source. Quasi-monoenergetic and continuous energy fast neutrons were derived through the D(d,n)He-3 and Be-9(d,n)B-10 reactions by using a deuterium gas target and a thick beryllium target, respectively. Experiments show that the luminosity of the WSF converter is 6-7.8 times as high as that of the ER converter we used before, and the statistics of the image is much better. The relationship between the luminosity and the thickness of the WSF converter was obtained from which the saturation thickness is about 25 mm. The smallest defect that can be detected by the WSF converter is about 2 mm. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：826 / 829

页数：4

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