Nanodosimetric kinetic model incorporating localized and delocalized recombination: Application to the prediction of the electron dose response of the peak 5a/5 ratio in the glow curve of LiF:Mg,Ti (TLD-100)

I. Eliyahu, Y. S. Horowitz, L. Oster, S. Druzhyna, I. Mardor

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

A kinetic model combining both localized and delocalized recombination is described which is based on different filling rates as a function of irradiation electron energy of a spatially correlated trapping center/luminescent center (TC/LC) complex. Following irradiation and thermal de-trapping the locally trapped electron-hole configuration is assumed to give rise to peak 5a and the e-only configuration to peak 5 in the glow curve of LiF:Mg,Ti (TLD-100). The model is capable of simulating the linear/supralinear dose response of composite peak 5, the dependence of the supralinearity on photon energy and the ratio of the intensities of peak 5a to peak 5 as a function of dose. However, this is achieved only by invoking the presence of band-tail states which allow thermally induced hopping leading to semi-localized recombination in the recombination mechanism of the e-only configuration.

Original languageEnglish
Pages (from-to)226-231
Number of pages6
JournalRadiation Measurements
Volume71
DOIs
StatePublished - 1 Jan 2014

Keywords

  • Delocalized recombination
  • Dose response
  • Ionization density
  • Localized recombination
  • Thermoluminescence

ASJC Scopus subject areas

  • Radiation
  • Instrumentation

Fingerprint

Dive into the research topics of 'Nanodosimetric kinetic model incorporating localized and delocalized recombination: Application to the prediction of the electron dose response of the peak 5a/5 ratio in the glow curve of LiF:Mg,Ti (TLD-100)'. Together they form a unique fingerprint.

Cite this