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Title: Applications of PeakFit software in thermoluminescence studies
Authors: Singh, Th Basanta
Rey, L
Gartia, R K
Keywords: Thermoluminescence
PeakFit software
Activation energy
Issue Date: May-2011
Publisher: NISCAIR-CSIR, India
Abstract: Some applications of the commercial software “PeakFit v.4.12” in thermoluminescence (TL) studies have been reported. The “PeakFit” is a simple but convenient, powerful tool in extracting the two most important intrinsic trapping parameters namely, the activation energy (<i>E</i>) and frequency factor (<i>s</i>) of TL peaks of complex glow curves, has been demonstrated. This is shown by considering the glow curves of NaCl recorded with various heating rates. The fourth derivative plots of a set of twelve glow curves of D<sub>2</sub>O ice excited with a dose 7.6 kGy (e-beam 2.2 MeV) and recorded with linear heating rate of 0.05Ks<sup>-1</sup> show clearly the existence of as many as eleven TL peaks in the range 77-250 K. These peaks are located at 102.2±1.8, 117.3±1.0, 127.0±1.3, 134.7±1.2, 144.4±1.5, 153.1±1.3, 164.4±1.1, 173.3±1.2, 182.3±1.5, 193.8±1.8 and 201.0±1.6 K, respectively which is in agreement with the recent finding on structure of glow curves of H<sub>2</sub>O ice.We also demonstrate that the software is a convenient tool not only to locate but also to integrate satellite peaks that may be used for dosimetry/dating. Using this concept, the Dose Response Curves (DRCs) of dosimetric TL peaks of BaSO<sub>4</sub> have been constructed.
Description: 297-302
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.49(05) [May 2011]

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