Thermoluminescence study of aluminium oxide doped germanium prepared by combustion synthesis method

Nurul Syazlin Binti Saharin,Nor Ezzaty Ahmad,Abdul Rahman Tamuri,M.H Koh,G Krishnan,F Mohd Noor

doi:10.1051/epjconf/201715600011

Nurul Syazlin Binti Saharin, Nor Ezzaty Ahmad + Show 4 more

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https://doi.org/10.1051/epjconf/201715600011

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Abstract

The present paper reports the optimum concentration of germanium (Ge) dopant in aluminium oxide (AhO3) samples prepared by combustion synthesis (CS) method for thermoluminescence (TL) studies. The samples were prepared at various Ge concentration i.e. 1 to 5% mol. The phase formation of un-doped and Ge-doped Al 2 O 3 samples was determined using X-ray Diffraction (XRD). The sharp peaks present in the XRD pattern confirms the crystallinity of the samples. The samples were then exposed to 50 Gy Cobalt-60 sources (Gamma cell 220). TL glow curves were measured and recorded using a Harshaw Model 3500 TLD reader. Comparison of TL peaks were observed to obtain the best composition of Ge dopants. A simple glow curves TL peak at around 175C for all composition samples was observed. It was also found that the composition of aluminium oxide doped with 3.0% of germanium exhibits the highest thermoluminescence (TL) intensity which is 349747.04 (a.u).

Highlights

The application of thermoluminescence (TL) dosimetry in radiation protection has grown steadily due to the worldwide progress of the development of solid thermoluminescent dosimeter (TLD)
From the results above it is possible to conclude that combustion synthesis (CS) method is very suitable for the preparation of Al2O3 doped Ge for dosimetric applications
The technique is fast, low cost and produces well defined materials that can be used for dosimetric applications

Summary

Introduction

The application of thermoluminescence (TL) dosimetry in radiation protection has grown steadily due to the worldwide progress of the development of solid thermoluminescent dosimeter (TLD). The materials were generally synthesized by sol-gel method [3], ion beam implantation [4], solvent evaporation [5] and combustion synthesis (CS) [6,7,8]. Among this method, combustion synthesis (CS) is an effective and low-cost method for production of various industrially useful materials [9,10]. The solution preparation only requires low processing temperatures and short reaction times (̰~seconds) making it a quick and easy process [11,12,13] This process is used directly in the production of high purity and homogeneous ceramic oxide powders. The large volume of gases released during the reaction promotes a rapid disintegration of the precursor gel, yielding the desired nanocrystalline materials [14]

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