Similarities and differences between two different types of the thermoluminescence dosimeters belonging to the LiF family

Sadek A. M., Khamis F., Polymeris G. S., Carinou E., Kitis G.

Compound Semiconductor Week (CSW), Toyama, Japan, 26 - 30 June 2016, vol.14 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 14
  • Doi Number: 10.1002/pssc.201600220
  • City: Toyama
  • Country: Japan
  • Keywords: thermoluminescence, glow curve analysis, LiF, dosimeters, TL-LET RESPONSE, KINETIC TRAPPING PARAMETERS, GLOW-CURVE, NON-UNIVERSALITY, HEATING RATE, MIXED-ORDER, LIF-MG,TI, PEAKS, DECONVOLUTION, RADIATION
  • Ankara University Affiliated: Yes

Abstract

The kinetic parameters of the glow-peaks of Harshaw LiF : Mg, Ti (TLD) and Poland LiF : Mg, Ti (MTS) dosimeters were investigated at different dose levels using the computerized glow-curve deconvolution (CGCD) algorithm. The results showed that the glow-curve structure and the kinetic parameters of the MIS 6 and the TLD dosimeter are identical. In addition, the glow-curve structure and the kinetic parameters of the MTS N and MTS 7 dosimeters. However, unusual low activation energy ( 1.67 eV) and frequency factor ( 101's-1) values were detected for peak 5 of MTS N,and MTS 7 at the 50 Gy dose-level. Moreover, unlike the activation energy and the frequency factor of peak 5 of the TLD dosimeters, the activation energy and the frequency factor of peak 5 of MTS N and MTS 7 are substantially dependent on the absorbed dose level. The results also showed that peak 2 of the same dosimeters has also unusual low activation energy and frequency factor values. However, these values showed high stability over the different dose levels. The explanations of these unusual behaviors of peak 5 were discussed and a correlation between peak 2 and peak 5 was pointed out. 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim