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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;Dosimetry;Dating
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 (E) and frequency factor (s) 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 D2O ice excited with a dose 7.6 kGy (e-beam 2.2 MeV) and recorded with linear heating rate of 0.05Ks-1 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 H2O 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 BaSO4 have been constructed.
Page(s): 297-302
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.49(05) [May 2011]

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