<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>In the present work the sensitization of the entire glow-curve is studied in 6 different quartz samples of Nigerian origin. The investigation was applied to the un-fired “as is” samples as well as to samples fired at 900°C for 1 hour following cooling to room temperature. The results showed that in the case of “as is” glow-curve is sensitized as a whole. There is an abrupt transition from the “natural” sensitivity without any previous heating and the artificial sensitivity induced after the first heating. The sensitization is growing up strongly to the 10th heating but to a lower rate. The sensitization factor of the TL glow-peak at “110°C” was found to be linearly correlated to the higher temperature TL peaks. In the case of annealed samples there is an initial increase between the sensitivity immediately after the end of annealing and after the first heating. As the number of heating is increased up to the 10th heating the sensitization is stabilized at a constant value. The results are discussed in the frame-work of existing models and implications of the sensitization effect in various applications, while some explanations are attempted.</p></abstract>

In the present work the sensitization of the entire glow-curve is studied in 6 different quartz samples of Nigerian origin. The investigation was applied to the un-fired “as is” samples as well as to samples fired at 900°C for 1 hour following cooling to room temperature. The results showed that in the case of “as is” glow-curve is sensitized as a whole. There is an abrupt transition from the “natural” sensitivity without any previous heating and the artificial sensitivity induced after the first heating. The sensitization is growing up strongly to the 10th heating but to a lower rate. The sensitization factor of the TL glow-peak at “110°C” was found to be linearly correlated to the higher temperature TL peaks. In the case of annealed samples there is an initial increase between the sensitivity immediately after the end of annealing and after the first heating. As the number of heating is increased up to the 10th heating the sensitization is stabilized at a constant value. The results are discussed in the frame-work of existing models and implications of the sensitization effect in various applications, while some explanations are attempted.

Behavior of various Nigerian quartz samples to repeated irradiation and heating

Physics and Electronics Department, Adekunle Ajasin University, PMB 01, Akungba Akoko, Nigeria

Laboratory of Radiation Applications and Archaeological Dating, Department of Archaeometry and Physicochemical Measurements, ‘Athena’ — Research and Innovation Center in Information, Communication and Knowledge Technologies, Tsimiski 58, GR-67100, Xanthi, Greece

Nuclear Physics Laboratory, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece

Geochronometria

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Behavior of various Nigerian quartz samples to repeated irradiation and heating"}

In the present work the sensitization of the entire glow-curve is studied in 6 different quartz samples of Nigerian origin. The investigation was applied to...

Behavior of various Nigerian quartz samples to repeated irradiation and heating

Pubblicato online: 19 giu 2012

Pagine: 212 - 220

DOI: https://doi.org/10.2478/s13386-012-0008-2

Parole chiave
Quartz, Thermoluminescence, 110°C TL glow peak, High Temperature TL peaks (HTTLPS), Pre-dose effect, Sensitization, luminescence centre, defects

© 2012 Silesian University of Technology, Gliwice, Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Behavior of various Nigerian quartz samples to repeated irradiation and heating

Pubblicato online: 19 giu 2012

Pagine: 212 - 220

DOI: https://doi.org/10.2478/s13386-012-0008-2

Parole chiaveQuartz, Thermoluminescence, 110°C TL glow peak, High Temperature TL peaks (HTTLPS), Pre-dose effect, Sensitization, luminescence centre, defects

© 2012 Silesian University of Technology, Gliwice, Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Parole chiave
Quartz, Thermoluminescence, 110°C TL glow peak, High Temperature TL peaks (HTTLPS), Pre-dose effect, Sensitization, luminescence centre, defects