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<p>This study aims to develop a thermoluminescence (TL) dosimetry device utilizing a TiO₂: Cu multilayer film, which is fabricated using RF/DC sputtering and subjected to various annealing temperatures. The films, featuring a 5&#xa0;nm-thick Cu layer, were tested under gamma-ray doses of up to 1500&#xa0;mGy, displaying the highest TL intensity after annealing at 400&#xa0;°C. Furthermore, annealing at 600&#xa0;°C converted the films to the anatase phase, resulting in reduced roughness and improved grain size, porosity, transmittance, and absorption. The dosimetric parameters were comprehensively analyzed, focusing on homogeneity, dose-response, and repeatability, with a relative sensitivity of approximately 0.1035 compared to TLD-100, confirming their potential for TL dosimetry.</p>

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Effect of annealing temperature on the dosimetric properties of thermoluminescence in a TiO2: Cu multilayer film under gamma-ray exposure

  • 期刊论文

  • 发表日期：

    2025年2月4日

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  • Ali Saleh Alkadem Idriss,
  • Nik Noor Ashikin Nik Ab Razak,
  • Naser M. Ahmed,
  • Youssef Aboubaker Abdulla,
  • G. I. Efenji,
  • Mohammed Dawood Salman

摘要

This study aims to develop a thermoluminescence (TL) dosimetry device utilizing a TiO₂: Cu multilayer film, which is fabricated using RF/DC sputtering and subjected to various annealing temperatures. The films, featuring a 5 nm-thick Cu layer, were tested under gamma-ray doses of up to 1500 mGy, displaying the highest TL intensity after annealing at 400 °C. Furthermore, annealing at 600 °C converted the films to the anatase phase, resulting in reduced roughness and improved grain size, porosity, transmittance, and absorption. The dosimetric parameters were comprehensively analyzed, focusing on homogeneity, dose-response, and repeatability, with a relative sensitivity of approximately 0.1035 compared to TLD-100, confirming their potential for TL dosimetry.