Sensors (Dec 2022)

Scintillation Response of Nd-Doped LaMgAl<sub>11</sub>O<sub>19</sub> Single Crystals Emitting NIR Photons for High-Dose Monitoring

  • Daisuke Nakauchi,
  • Takumi Kato,
  • Noriaki Kawaguchi,
  • Takayuki Yanagida

DOI
https://doi.org/10.3390/s22249818
Journal volume & issue
Vol. 22, no. 24
p. 9818

Abstract

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The Nd-doped LaMgAl11O19 single crystals were synthesized by the floating zone method, and the photoluminescence and scintillation properties were evaluated. Under X-ray irradiation, several sharp emission peaks due to the 4f–4f transitions of Nd3+ were observed at 900, 1060, and 1340 nm in the near-infrared range, and the decay curves show the typical decay time for Nd3+. The samples show good afterglow properties comparable with practical X-ray scintillators. The 1% and 3% Nd-doped LaMgAl11O19 samples show a good linearity in the dynamic range from 6–60,000 mGy/h.

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