CHARACTERIZATION OF A NEW PREPARED Li2B4O7: Mn DOSIMETER FOR γ- IRRADIATION HIGH-DOSE DOSIMETRY | ||
| Iranian Journal of Science | ||
| مقاله 9، دوره 32، شماره 3، آذر 2008، صفحه 221-226 اصل مقاله (180.46 K) | ||
| نوع مقاله: Research Note | ||
| شناسه دیجیتال (DOI): 10.22099/ijsts.2008.2291 | ||
| نویسندگان | ||
| M. SHARIFZADEH* ؛ R. GORJIFARD | ||
| Radiation Applications Research School, Nuclear Science &Technology Research Institute, P.O. Box 11365-3486, Tehran, I. R. of Iran | ||
| چکیده | ||
| 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 6°C/sec. The pre- and post- irradiation anneal temperature was 300°C 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 375°C, 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. | ||
| کلیدواژهها | ||
| Dosimetry؛ Thermoluminescence؛ dose response؛ dose rate؛ glow curve | ||
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