The thermoluminescence response of doped SiO2 optical fibres subjected to fast neutrons

被引：49

作者：

Hashim, S. ^{[1
]}

Bradley, D. A. ^{[2
]}

Saripan, M. I. ^{[3
]}

Ramli, A. T. ^{[1
]}

Wagiran, H. ^{[1
]}

机构：

[1] Univ Teknol Malaysia, Dept Phys, Johor Darul 81310, Takzim, Malaysia

[2] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England

[3] Univ Putra Malaysia, Fac Engn, Serdang 43400, Selangor, Malaysia

来源：

APPLIED RADIATION AND ISOTOPES | 2010年 / 68卷 / 4-5期

关键词：

Thermoluminescence; SiO2 optical fibres; Fast neutrons; Monte Carlo N-particle (MCNP);

D O I：

10.1016/j.apradiso.2009.10.027

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

This paper describes a preliminary study of the thermoluminescence (TL) response of doped SiO2 optical fibres subjected to (AmBe)-Am-241 neutron irradiation. The TL materials, which comprise Al- and Ge-doped silica fibres, were exposed in close contact with the (AmBe)-Am-241 source to obtain fast neutron interactions through use of measurements obtained with and without a Cd filter (the filter being made to entirely enclose the fibres). The neutron irradiations were performed for exposure times of 1-, 2-, 3-, 5- and 7-days in a neutron tank filled with water. In this study, use was also made of the Monte Carlo N-particle (MCNP (TM)) code version 5 (V5) to simulate the neutron irradiations experiment. It was found that the commercially available Ge-doped and Al-doped optical fibres show a linear dose response subjected to fast neutrons from (AmBe)-Am-241 source up to seven days of irradiations. The simulation performed using MCNP5 also exhibits a similar pattern, albeit differing in sensitivity. The TL response of Ge-doped fibre is markedly greater than that of the Al-doped fibre, the total absorption cross section for Ge in both the fast and thermal neutrons region being some ten times greater than that of Al. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：700 / 703

页数：4

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