Use of initial rise method to analyze a general-order kinetic 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.

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Analysis and estimation of fading time from thermoluminescence glow curve by using artificial neural network

Radiation Effects and Defects in Solids ◽

10.1080/10420150.2021.1954000 ◽

2021 ◽

pp. 1-12

Author(s):

Esme Isik ◽

Ibrahim Isik ◽

Hüseyin Toktamis

Keyword(s):

Neural Network ◽

Artificial Neural Network ◽

Glow Curve ◽

Artificial Neural ◽

Thermoluminescence Glow Curve ◽

Fading Time

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APPLICATION OF CVD DIAMOND FILMS FOR UV THERMOLUMINESCENCE DOSIMETER

International Journal of Modern Physics B ◽

10.1142/s0217979202010762 ◽

2002 ◽

Vol 16 (06n07) ◽

pp. 1003-1007 ◽

Cited By ~ 4

Author(s):

J. AHN ◽

B. GAN ◽

Q. ZHANG ◽

S. F. YOON ◽

V. LIGATCHEV ◽

...

Keyword(s):

Activation Energy ◽

Glow Curve ◽

Diamond Films ◽

Frequency Factor ◽

Cvd Diamond ◽

Order Kinetic ◽

First Order ◽

Order Kinetic Model ◽

Ionizing Radiations ◽

Trap Activation

This study presents the investigation of CVD diamond for the application of an UV TL dosimeter. A 9-μm-thick film used in this study presents a TL glow curve with a well-defined first-order kinetic peak (at about 273 K), which norm ally presents in the glow curve from ionizing radiations, is not observed. By fitting the glow curve to a first-order kinetic model, the trap activation energy E t = 0.95 eV and frequency factor s = 5.6 x 106 s -1 have been resolved.

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Thermoluminescence glow curve analysis and trap parameters calculation of UV-induced La2Zr2O7 phosphor doped with gadolinium

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-019-02712-z ◽

2019 ◽

Vol 31 (3) ◽

pp. 1936-1944 ◽

Cited By ~ 3

Author(s):

Neha Dubey ◽

Vikas Dubey ◽

Janita Saji ◽

Jagjeet Kaur

Keyword(s):

Glow Curve ◽

Curve Analysis ◽

Thermoluminescence Glow Curve ◽

Parameters Calculation

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Thermoluminescence Characteristics of Terbium Doped Zinc Borates

Crystals ◽

10.3390/cryst9110557 ◽

2019 ◽

Vol 9 (11) ◽

pp. 557 ◽

Cited By ~ 1

Author(s):

Nil Kucuk

Keyword(s):

Glow Curve ◽

Single Phase ◽

Peak Shape ◽

X Ray Diffraction ◽

X Ray ◽

Initial Rise ◽

Linear Behavior ◽

Minimum Detectable Dose ◽

Xrd Studies ◽

Dose Responses

In this work, structural and thermoluminescence (TL) characteristics for ZnB2O4:xTb3+ (x = 0.01, 0.02, 0.03, 0.04, 0.05, and 0.10 mole) phosphors were investigated. The phosphors were prepared via synthesis of nitric acid. The X-ray diffraction (XRD) studies show that the synthesized samples can be indexed to nearly single-phase cubic ZnB2O4. The TL characteristics following 90Sr beta irradiation (40 mCi) were studied. TL intensity is found to depend on Tb concentration. The optimal concentration of the doped Tb3+ is 0.03 mol in TL measurements. TL dose responses of the phosphors to beta doses of 0.143, 0.715, 1.43, 15, 30 and 60 Gy showed fairly linear behavior. The minimum detectable dose (MDD) value for ZnB2O4:0.04Tb3+ was found to be 87 mGy. The kinetic parameters of the ZnB2O4:0.03Tb3+ sample were estimated by the glow curve deconvolution, the initial rise, the curve fitting, and the peak shape methods. The results indicate that these phosphors are thought to be promising candidates as TL materials. The results provide valuable knowledge of the characteristics of Tb-doped ZnB2O4 for use in dosimetry research.

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