تولید دزیمتر LiF: Mg, Ti و مقایسه پاسخ آن با دزیمتر (LiF: Mg, Ti (TLD-۱۰۰ ساخت شرکت هارشا در برابر پرتوهای گاما

Thermoluminescence dosimeters are small tablets used with ۳. ۲*۳. ۲*۰. ۹mm^۳ for measurement of received dose from radioactive various beams. The most common dosimeter is TLD-۱۰۰ which is lithium-fluoride family and this dosimeter contain magnesium impurities. In this study, first lithium-flouride powder was mixed with titanium and controlled atmosphere samples were heated. After measuring of samples density and hardness, their glow curves were drawn and microscopic pictures of producted samples were provided. Of course, the reader should know that the best press pressure, the best range of temperature heating and the best range of samples heating were determined in ۶-۸ (ton/cm۲), ۷۷۵-۸۰۰ ° C and ۱۵-۲۰ h, respectively [۱]. Then, the response of producted TLD-۱۰۰ under radiation of gamma sources, ۶۰Co, was measured in ۵۰۰ mSv rate and obtained values were compared with obtained values by Harshaw producted samples. Dosimetry characteristics of producted samples was evaluated according to ASTM E ۶۶۸-۰۰, IEC-ISO ۱۰۶۶ standards. The results of comparisions indicate good agreements between producted sample and Harshaw sample.

Keywords:

دزیمتری , ترمولومینسانس , منحنی درخشندگی , هارشا , پرتو گاما , نوترون , فلوراید - لیتیوم