نتایج جستجو برای: دزیمتر thermoluminescence dosimeter
تعداد نتایج: 3142 فیلتر نتایج به سال:
<sec> LiMgPO<sub>4</sub> (LMP) phosphor doped with rare earth is a promising radiation dosimeter material. Thermoluminescence (TL) spectroscopy an effective method to study the carrier traps and luminescence centers in materials. To luminescent mechanism of rare-earth-doped LMP phosphors, phosphors Tm Tb (LMP:Tm, LMP:Tb LMP:Tm, Tb) are prepared by high temperature solid state ...
A practical exercise for developing a simple cost-effective solar ultraviolet radiation dosimeter is presented for use by middle school science students. Specifically, this exercise investigates a series of experiments utilising the historical blue print reaction, combining ammonium iron citrate and potassium hexacyanoferrate to develop an ultraviolet sensitive solution. The activity is intende...
The thermoluminescence (TL) properties of laboratory grown quartz have been studied for its possible high gamma dosimetric applications. The variation of 210 o C glow peak is observed in different annealed samples followed by gamma irradiation near room temperature. The peak was found very sensitive to the pre-thermal treatments. The radiation induced effects in quartz have been studied in deta...
Standard kinetic models for thermoluminescence (TL) relate to the simple trap model (STM) and the model of localised transitions (LT). This paper presents a review of TL properties in various spatially correlated systems (SCS), which span the two limiting cases. A classification of kinetic models for SCS is proposed. Numerical results are presented for the isolated clusters model (IC) and the i...
In order to measure a three-dimensional dose distribution in X-ray radiotherapy, we developed TL slab dosimeter with new TL phosphor Li3B7O12(Cu), which has Zeff = 7.42 and a density of 1.01 g/cm 3 and synthetic resin as binder [1].We can measure a three-dimensional dose distribution easily and reliably using this detector. This detector showed a promising tool for QA/QC in advanced X-ray radio...
یکی از مهمترین مواردی که در پرتودهی نمونهها برای مطالعات فعالسازی یا غیر آن در رآکتورهای تحقیقاتی لازم است مدنظر قرار گیرد توزیع سهبعدی دز در فضای اطراف قلب است. دزیمترهای ژل- پلیمر علاوه بر امکان تعیین توزیعهای پیچیدهی دز به صورت سهبعدی دارای ترکیبی مشابه با بافت بدن بوده و خود به صورت یک فانتوم عمل میکنند. تاکنون کمتر به کاربرد دزیمتر ژلی برای تعیین توزیع دز در میدانهای مخ...
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