Yazar "Polymeris, George S." için listeleme
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Reconstruction of thermally quenched glow curves in quartz
Subedi, Bhagawan; Polymeris, George S.; Tsirliganis, Nestor C.; Pagonis, Vasilis; Kitis, George (Pergamon-Elsevier Science Ltd, 2012-04)The experimentally measured thermoluminescence (TL) glow curves of quartz samples are influenced by the presence of the thermal quenching effect, which involves a variation of the luminescence efficiency as a function of ... -
Relative response of TL and component-resolved OSL to alpha and beta radiations in annealed sedimentary quartz
Polymeris, George S.; Afouxenidis, Dimitrios; Raptis, Spyridoula; Liritzis, Ioannis; Tsirliganis, Nestor C.; Kitis, George (Pergamon-Elsevier Science Ltd, 2011-10)Knowledge of the relative luminescence response to alpha and beta radiation is very important in TL and OSL dating. In the present study the relative alpha to beta response is studied in a sedimentary quartz sample, ... -
Temperature lags of luminescence measurements in a commercial luminescence reader
Güneç Kıyak, Nafiye; Kitis, George; Polymeris, George S. (Elsevier Science Inc, 2015-09-15)The temperature recorded in thermoluminescence and optically stimulated luminescence equipments is not the temperature of the sample but that of the heating element on which the thermocouple is attached. Depending upon the ... -
Thermal quenching of thermoluminescence in quartz samples of various origin
Subedi, Bhagawan; Oniya, Ebenezer O.; Polymeris, George S.; Afouxenidis, Dimitrios; Tsirliganis, Nestor C.; Kitis, George (Elsevier Science BV, 2011-03-15)The effect of thermal quenching stands among the most important properties in the thermoluminescence (TL) of quartz on which many applications of TL are based. Since the quartz samples used in various applications are all ... -
Thermal quenching of thermoluminescence in quartz samples of various origins
Subedi, Bhagawan; Afouxenidis, Dimitrios; Polymeris, George S.; Bakoglidis, Konstantinos D.; Raptis, Spyridoula; Tsirliganis, Nestor C.; Kitis, George (Univ Agean, Dept Mediterranean Stud, 2010)The effect of thermal quenching plays an important role in the thermoluminescence (TL) of quartz on which many applications of TL are based. In present work it is investigated that the thermal quenching parameters i.e. the ... -
Thermally assisted OSL from deep traps in Al2O3:C
Polymeris, George S.; Raptis, Spyridoula; Afouxenidis, Dimitrios; Tsirliganis, Nestor C.; Kitis, George (Pergamon-Elsevier Science Ltd, 2010-03)The present work suggests an alternative experimental method in order to not only measure the signal of the deep traps in Al2O3:C without heating the sample to temperatures greater than 500 degrees C, but also use this ... -
Thermoluminescence and optically stimulated luminescence properties of natural barytes
Kitis, George; Güneç Kıyak, Nafiye; Polymeris, George S. (Elsevier Ltd, 2010-12)Heavy, baryte-loaded, concrete is commonly used as radiation shielding material around high energy particle accelerators. Concrete samples received from a shielding block located at CERN cite contain many crystalline ... -
Thermoluminescence as a probe in bioactivity studies; the case of 58S sol-gel bioactive glass
Polymeris, George S.; Goudouri, Ourania Menti; Kontonasaki, Eleana; Paraskevopoulos, Konstantinos M.; Tsirliganis, Nestor C.; Kitis, George (IOP Publishing Ltd, 2011-10-05)The formation of a carbonated hydroxyapatite (HCAp) layer on the surface of bioactive materials is the main reaction that takes place upon their immersion in physiological fluids. To date, all techniques used for the ... -
TL and OSL response of turquoise for dosimetric application
Subedi, Bhagawan; Afouxenidis, Dimitrios; Polymeris, George S.; Tsirliganis, Nestor C.; Paraskevopoulos, Konstantinos M.; Kitis, George (University of Aegean, 2010)Turquoise is one of the amongst first gem stones used in jewelry and possessing cultural value since 2000 BC (at least). This work attempts characterize this stone scientifically using both thermally (TL) and optically ... -
TL/OSL properties of crystalline inclusions from heavy, barytes loaded, concrete
Güneç Kıyak, Nafiye; Polymeris, George S.; Kitis, George (Pergamon-Elsevier Science Ltd, 2010-03)In the present work, we report the luminescence data obtained from heavy, barytes loaded, concrete containing many crystalline inclusions, extracted from a shielding block located at CERN. The use of both Thermoluminescence ...