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<p>Luminescent properties of Nd<sup>3+</sup>-doped 20BaO − 60Bi<sub>2</sub>O<sub>3</sub> − 20GeO<sub>2</sub> glasses were investigated for near infrared scintillators. The transparent glasses with the Nd<sub>2</sub>O<sub>3</sub> concentrations of 0.1% (0.1%Nd BaBiGe), 0.5% (0.5%Nd BaBiGe), and 1.0% (1.0%Nd BaBiGe) were synthesized via the melt-quenching process. The photoluminescence and scintillation peaks appeared at approximately 910, 1080, and 1340&#xa0;nm, and originated from 4f–4f transitions of Nd<sup>3+</sup>. The highest quantum yield (84%) was recorded from the 0.1%Nd BaBiGe. On the other hand, the 0.5%Nd BaBiGe showed the highest intensity under X-ray, and its lowest detectable limit of the X-ray dose rate measured with a lnGaAs photodiode was 500&#xa0;mGy/h.</p>

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Radiation response characteristics of the Nd3+-activated BaO–Bi2O3–GeO2 glasses

  • 期刊论文

  • 发表日期：

    2025年12月16日

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  • Yumiko Koga,
  • Tsubasa Suzuki,
  • Naoki Kawano,
  • Daisuke Nakauchi,
  • Toshiaki Kunikata,
  • Haruaki Ezawa,
  • Keishi Yamabayashi,
  • Shota Otake,
  • Kenji Shinozaki,
  • Takayuki Yanagida

摘要

Luminescent properties of Nd3+-doped 20BaO − 60Bi2O3 − 20GeO2 glasses were investigated for near infrared scintillators. The transparent glasses with the Nd2O3 concentrations of 0.1% (0.1%Nd BaBiGe), 0.5% (0.5%Nd BaBiGe), and 1.0% (1.0%Nd BaBiGe) were synthesized via the melt-quenching process. The photoluminescence and scintillation peaks appeared at approximately 910, 1080, and 1340 nm, and originated from 4f–4f transitions of Nd3+. The highest quantum yield (84%) was recorded from the 0.1%Nd BaBiGe. On the other hand, the 0.5%Nd BaBiGe showed the highest intensity under X-ray, and its lowest detectable limit of the X-ray dose rate measured with a lnGaAs photodiode was 500 mGy/h.