Determination of the response to photons and thermal neutrons of new LiF based TL materials for radiation protection purposes

Roberto Bedogni, Adolfo Esposito, Maurizio Angelone, Maurizio Chiti

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Abstract

LiF based thermoluminescent materials are the most used passive detectors in the field of radiation protection. For personal and area dosimetry in mixed neutron and photon fields, .6LiF and7LiF TLD pairs are employed for the simultaneous determination of neutron and photon doses. Therefore, an accurate knowledge of their sensitivity to photons and thermal neutrons is essential. Aimed at providing reliable sensitivity data for new LiF based TL materials, an experimental study was performed in the framework of collaboration between INFN Frascati National Laboratories and ENEA, Italy. The6LiF(Mg, Cu, P) material from TLD Poland, was specially manufactured in six versions with different sensitive thickness (t = 40,60, 80, 100,150 and 230 mg·cm-2), which implies different neutron and photon sensitivity. ' Together with the7LiF(Mg, Cu, P) material, namely MCP-7, all ( seven type of TLDs were irradiated in reference beams of photons and thermal neutrons, at the calibration facilities of INFN and ENEA. The study provides a set of sensitivity data and discusses: the performance of the investigated materials for the dosimetry of ' mixed neutron and photon fields. All uncertainties or error bars reported in the paper refer to 95% confidence level (2 sigma). © 2006 IEEE.
Original languageEnglish
Article number1645045
Pages (from-to)1367 - 1370
Number of pages4
JournalIEEE Transactions on Nuclear Science
Volume53
Issue number3
DOIs
Publication statusPublished - Jun 2006
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

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