Re-Investigation of the Kinetic Trapping Parameters of Peak 5 in TLD-100 via 'Prompt' and 'Residual' Isothermal Decay

D. Yossian, S. Mahajna, B. Ben Shachar, Y. S. Horowitz

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The mean-life of peak 5 in LiF:Mg, Ti (TLD-100, Harshaw) has been measured as a function of temperature via both 'prompt' and 'residual' isothermal decay in 10°C intervals from 120°C to 210°C. Measurements were carried out at two dose levels (2 mGy and 0.1 Gy) and on both 0.8 mm thick chips and thin 25 powdered samples. Computerised glow curve deconvolution (CGCD) was used, also peak cleaning techniques, and careful selection of annealing times to avoid the interference of satellite peaks. In order to minimise clustering and precipitation effects as much as possible, the mean-lives are measured over as short a time interval as possible, but still consistent with the required accuracy of measurement. Under these conditions the mean-lives seem to follow an exponential behaviour with temperature. Analysis of all the combined data yields E = 1.25±0.03 eV and 4 × 1010 s-1 < s < 3 × 1011 s-1. These results, very different from E and s values deduced from peak shape techniques, strengthen the premise that the trapping structure(s), and/or the extent of clustering/precipitation, and perhaps even the mechanism for charge carrier release responsible for peak 5, are different in isothermal decay than in linear heating for glow curve readout.

Original languageEnglish
Pages (from-to)129-133
Number of pages5
JournalRadiation Protection Dosimetry
Issue number1-4
StatePublished - 1 May 1993

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiation
  • Radiology Nuclear Medicine and imaging
  • Public Health, Environmental and Occupational Health


Dive into the research topics of 'Re-Investigation of the Kinetic Trapping Parameters of Peak 5 in TLD-100 via 'Prompt' and 'Residual' Isothermal Decay'. Together they form a unique fingerprint.

Cite this