Thermoluminescence glow curve analysis and kinetic parameters of Dy-doped BaSi2O5 phosphor

2020 ◽  
Author(s):  
Y. Alajlani ◽  
N. Can
Keyword(s):  
Kinetic Parameters ◽  
Glow Curve ◽  
Curve Analysis ◽  
Thermoluminescence Glow Curve

An Overview on Peak Shape Method for Thermoluminescence Glow Curve Analysis

2018 ◽  
pp. 26-52
Author(s):  
Sukhamoy Bhattacharyya ◽  
Partha Sarathi Majumdar
Keyword(s):  
Activation Energy ◽  
Glow Curve ◽  
Frequency Factor ◽  
Curve Analysis ◽  
Peak Shape ◽  
Order Of Kinetics ◽  
Symmetry Factor ◽  
Alternative Approach ◽  
General Order ◽  
Thermoluminescence Glow Curve

The shape of a thermoluminescence (TL) glow curve has fundamental importance for calculating the characteristic parameters of trap levels within the band gap. TL analysis are mostly based on the three-parameter general order kinetics model. The parameters are activation energy, order of kinetics, and frequency factor. Peak shape method is one of the most prominent methods for extracting the activation energy from a TL curve. An overview of different peak shape methods along with an alternative approach formulated directly from basic TL equations is presented in this chapter. Generally, peak shape method requires prior knowledge of order of kinetics to determine activation energy which creates a difficulty due to the non-uniqueness of symmetry factor for a particular value of order of kinetics. A modified version of peak shape method which is free from this constraint is discussed here. Activation energies from experimental curves of tremolite and actinolite are estimated using peak shape method. Limitation of peak shape method for saturated TL peaks with heavy retrapping is also discussed.

Thermoluminescence Glow Curve Analysis of Mn4+-Doped Barium Yttrium Oxide Phosphor

2021 ◽  
pp. 211-214
Author(s):  
Vikram Awate ◽  
Lokeshwar Patel ◽  
Rashmi Sharma ◽  
A. K. Beliya ◽  
Ratnesh Tiwari ◽  
...  
Keyword(s):  
Yttrium Oxide ◽  
Glow Curve ◽  
Curve Analysis ◽  
Thermoluminescence Glow Curve ◽  
Barium Yttrium

Thermoluminescence glow curve analysis of natural onyx from Turkey

2015 ◽  
Vol 96 ◽  
pp. 13-19 ◽  
Author(s):  
Tamer Dogan ◽  
Hüseyin Toktamış ◽  
Mehmet Yüksel ◽  
Mustafa Topaksu ◽  
A. Necmeddin Yazici
Keyword(s):  
Glow Curve ◽  
Curve Analysis ◽  
Thermoluminescence Glow Curve

Violet blue emission and thermoluminescence glow curve analysis of Gd2SiO5:Ce3+ phosphor

Optik ◽  
2016 ◽  
Vol 127 (15) ◽  
pp. 6243-6252 ◽  
Author(s):  
Yogita Parganiha ◽  
Jagjeet Kaur ◽  
Vikas Dubey ◽  
Ravi Shrivastava ◽  
Deepika Chandrakar
Keyword(s):  
Glow Curve ◽  
Blue Emission ◽  
Curve Analysis ◽  
Thermoluminescence Glow Curve

scholarly journals Glow curve analysis by Gauss-Lorentz function

2013 ◽  
Vol 28 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Zdravko Vejnovic ◽  
Milos Pavlovic ◽  
Marina Kutin ◽  
Milorad Davidovic
Keyword(s):  
Activation Energy ◽  
Kinetic Model ◽  
Kinetic Parameters ◽  
Glow Curve ◽  
Curve Analysis ◽  
Geometric Parameters ◽  
Experimental Curve ◽  
Kinetics Model ◽  
Exponential Factor ◽  
Mixed Order

A new method for fitting glow curves, described in a mixed order kinetics model, with Gauss-Lorentz function is shown. Theoretical expressions of the mixed order kinetics model are shown in a new way, so that the values of kinetic parameters can be obtained through the geometric parameters. When the model is described in this way it is possible to calculate precisely the kinetic parameters such as activation energy, pre-exponential factor and the factor a= n0/(h + n0). At the same time, obtained values of geometric parameters of the experimental curve, which is described with the Gauss-Lorentz function, can be used to estimate the kinetic model, in which thermoluminescence relaxation occurs. This gives a possibility of a new application of Gauss-Lorentz function to be used as a criterion for assessing model of relaxation, when it is not known in advance. The accuracy of fitting is studied, for the specific cases of computer simulated thermoluminescent curves with one peak.

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