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<p>The work introduces a new type of UV-emitting high-<i>Z</i> OSL detectors based on YAlO<sub>3</sub>:Bi<sup>3+</sup> (YAP: Bi) perovskite. Two kinds of YAP: Bi solid state detectors have been fabricated and compared to BeO Thermalox<sup>®</sup>995 chips. The first ones are single-crystalline detectors cut from a Czochralski grown crystal. The second are detectors cut from the high-density bulk ceramics prepared by the high-pressure high-temperature (HPHT) pressing technique from nanocrystalline powder derived from sol-gel synthesis. The YAP: Bi ceramic detectors studied suffer from strong thermal fading, which makes their use impractical, at least until technological methods to modify this property of ceramics are found. The single crystalline YAP: Bi detectors show very low thermal fading, a wide linearity range of dose response and a sensitivity comparable to BeO, which together with the optical registration in the same UV range, compatible optical stimulation by blue light and similar registration times in CW-OSL mode make them ideal high-<i>Z</i> detectors that can be used alone or in tandem with BeO detectors.</p>

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New high-Z detectors based on YAlO3:Bi3+ for joint use with tissue equivalent BeO in tandem OSL dosimeter

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月1日

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  • Yaroslav Zhydachevskyy,
  • Vasyl Stasiv,
  • Oleksandr Poshyvak,
  • Sergii Ubizskii,
  • Zuzanna Pawłowska,
  • Yuliia Rumiantseva,
  • Magdalena Baran,
  • Halyna Zhydachevska,
  • Marek Berkowski,
  • Andrzej Suchocki

摘要

The work introduces a new type of UV-emitting high-Z OSL detectors based on YAlO3:Bi3+ (YAP: Bi) perovskite. Two kinds of YAP: Bi solid state detectors have been fabricated and compared to BeO Thermalox®995 chips. The first ones are single-crystalline detectors cut from a Czochralski grown crystal. The second are detectors cut from the high-density bulk ceramics prepared by the high-pressure high-temperature (HPHT) pressing technique from nanocrystalline powder derived from sol-gel synthesis. The YAP: Bi ceramic detectors studied suffer from strong thermal fading, which makes their use impractical, at least until technological methods to modify this property of ceramics are found. The single crystalline YAP: Bi detectors show very low thermal fading, a wide linearity range of dose response and a sensitivity comparable to BeO, which together with the optical registration in the same UV range, compatible optical stimulation by blue light and similar registration times in CW-OSL mode make them ideal high-Z detectors that can be used alone or in tandem with BeO detectors.