CHARACTERIZATION OF A NEW PREPARED LI2B4O7: MN DOSIMETER FORγ- IRRADIATION HIGH-DOSE DOSIMETRY; RESEARCH NOTE

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SHARIFZADEH M.; GORJIFARD R.

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Paper Information

Journal: IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION A- SCIENCE Year:2008 | Volume:32 | Issue:A3 Page(s): 221-226

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Title

CHARACTERIZATION OF A NEW PREPARED LI2B4O7: MN DOSIMETER FORγ- IRRADIATION HIGH-DOSE DOSIMETRY; RESEARCH NOTE

Author(s)

SHARIFZADEH M. | GORJIFARD R. | Issue Writer Certificate

Keywords

DOSIMETRYQ3

THERMOLUMINESCENCEQ3

DOSE RESPONSEQ3

DOSE RATEQ3

GLOW CURVEQ3

Abstract

A lithium borate THERMOLUMINESCENCE dosimeter with 0.3 wt% of manganese impurity concentration was prepared for high dose levels in the range of 1-30 kGy for gamma irradiation applications. The TLD reader was used for read out purposes from ambient temperature to about 400°C with a heating rate of 6oC/sec. The pre- and post- irradiation anneal temperature was 300oC for 1.5 and 1 hours respectively. The effects of absorbed dose, DOSE RATE, storage time, as well as the temperature and humidity versus pre- and post-irradiation storage time have been studied. The main glow peak was found to occur at 375oC, and the dosimeter response in the range of 1-30 kGy was linear. No significant fading effect of the dosimetric peak was observed after 8 weeks of storage, and the effects of ambient temperature and humidity were less than ±5% at 95% confidence level.

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