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<p>We synthesized Er-activated CaF<sub>2</sub> translucent ceramics with several doping concentrations (0.1, 1.0, 10, and 20%) to evaluate their near-infrared (NIR) scintillation performance. In the NIR scintillation spectra, the samples exhibited a main emission peak at 1540&#xa0;nm. Under visible lights and X-rays excitation, the obtained decay time constants were comparable to 4f–4f transitions of Er<sup>3+</sup>. The photoluminescence quantum yields in the 940–1640&#xa0;nm wavelength range of 0.1, 1.0, 10, and 20% Er-activated samples were 20, 37, 50, and 27%, respectively. In the dose rate response measurement, the 10% Er-activated sample showed good linearity and lower detection limit of 0.61&#xa0;mGy/h, suggesting its potential applicability for high dose field radiation monitoring.</p>

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Evaluation of near-infrared scintillation performance in Er-activated CaF2 translucent ceramics for high dose field monitoring applications

  • 期刊论文

  • 发表日期：

    2026年3月5日

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  • Takeshi Ubukata,
  • Shota Otake,
  • Hiromi Kimura,
  • Takumi Kato,
  • Daisuke Nakauchi,
  • Noriaki Kawaguchi,
  • Takayuki Yanagida

摘要

We synthesized Er-activated CaF2 translucent ceramics with several doping concentrations (0.1, 1.0, 10, and 20%) to evaluate their near-infrared (NIR) scintillation performance. In the NIR scintillation spectra, the samples exhibited a main emission peak at 1540 nm. Under visible lights and X-rays excitation, the obtained decay time constants were comparable to 4f–4f transitions of Er3+. The photoluminescence quantum yields in the 940–1640 nm wavelength range of 0.1, 1.0, 10, and 20% Er-activated samples were 20, 37, 50, and 27%, respectively. In the dose rate response measurement, the 10% Er-activated sample showed good linearity and lower detection limit of 0.61 mGy/h, suggesting its potential applicability for high dose field radiation monitoring.