Doped and undoped lead borate glass-ceramics as thermoluminescent detectors

Abstract

Undoped and Ce and Eu doped glasses and glass ceramic materials with nominal composition 33 % PbO 67 % B203 (% in mol), were obtained by melting/quenching technique. Glass ceramics were obtained by subsequent crystallization of glass samples. Glass samples were characterized by Inductively Coupled Plasma (ICP), Differential Thermal Analysis (DTA), Fourier Transform Infrared Spectrometry (FTIR) and UV-Vis spectrometry. Glass-ceramics were characterized by X-Ray Powder Diffraction, and by measuring their therluminescence response as a function of 90 Sr irradiation dose. from a lead borate glass intended for thermoluminescence dosimetry, as far as to study the effects that crystallization and Eu and Ce doping produce on their thermoluminescence response. PbB407 was found as the only crystalline phase in doped and undoped glass ceramics. Ce-doping was found to give a narrower bandgap than Eu one, and also introduces new electronical states. Crystallization clearly increases the thermoluminescence response, while undoped material gives higher response up to 20 Gy, although Ce-doping gives linearity up to 35 Gy and a higher response above 20 Gy. Among the studied samples, lead borate glass-ceramics, Ce-doped and undoped, present the best performance and they are then promising materials for thermoluminescence dosimetric applications.

Fabrication and Characterization of Geopolymer Bricks using Construction and Demolition Waste

“…Measurement of the power density by measuring the bulk of material minus any open pores or closed pores volume [22]. Size distribution of grain size for both clay and waste was determined by using the main refining method defined in ASTM D 422/2007 [23].…”

High-dose dosimetry with emphasis on the industrial sterilization and accidental radiation dosimetry

“…Such broad continuum TL peaks in glass materials have been observed by most of the investigators exploring the TL properties of various types of glass (e.g. Aydas et al, 2016;Balogun et al, 2003;Bartolotta et al, 2011;El-Adawy et al, 2010;Engin et al, 2010;Rodriguez et al, 2011;Şahiner, 2017). As Chen & McKeever (1997) state the above could be attributed to the fact that in amorphous materials the trap depths associated with particular defects are spread over a range of values rather than being uniquely defined.…”