Luminescence properties of common salt (NaCl) available in Nigeria for use as accident dosimeter in radiological emergency situation

被引：17

作者：

Ademola, Janet Ayobami ^{[1
,2
]}

机构：

[1] Helmholtz Zentrum Munchen, German Res Ctr Environm Hlth, Inst Radiat Protect, Ingolstadter Landstr 1, D-85764 Neuherberg, Germany

[2] Univ Ibadan, Dept Phys, Ibadan, Nigeria

来源：

JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES | 2017年 / 10卷 / 02期

关键词：

NaCl; TL; OSL; Retrospective dosimetry; RETROSPECTIVE DOSIMETRY;

D O I：

10.1016/j.jrras.2017.01.003

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In the event of a radiological accident or attack, it is important to assess and quantify radiation dose to the population. This could be done using materials in the vicinity that are sensitive to ionizing radiation. Common salt (NaCl) is known to be a sensitive thermoluminescence (TL) phosphor. Luminescence properties of common salt (NaCl) used in Nigeria were investigated using an automated luminescence reader Riso TL/OSL-DA-15, with attention focused more on the Optically Stimulated Luminescence (OSL). Strong radiation-induced TL and OSL signals were observed. The TL peaks occurred at about 100 degrees C, 240 degrees C and 280 degrees C. The dose response of both the TL and OSL signals showed a linear relationship. From the OSL pulse anneal curve with TL curve, a preheat temperature of 190 degrees C for 10 s was found adequate for the OSL measurements. There was no significant difference in the OSL decay for stimulation temperatures of 100 and 120 degrees C. Fading experiment over a storage period of 14 days showed about 13 and 3% decrease in the OSL signal of sample 1 and sample 2, respectively. The ratios of measured to given dose for dose recovery test were within +/-19% of unity. Within the limit of error the samples could be used as a complementary emergency dosimeter in radiological accident situation. (C) 2017 The Egyptian Society of Radiation Sciences and Applications. Production and hosting by Elsevier B.V.

引用

页码：117 / 121

页数：5

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