New intrinsic scintillator with large effective atomic number: Tl2HfCl6 and Tl2ZrCl6 crystals for x-ray and gamma-ray detections

Yutaka Fujimoto; Keiichiro Saeki; Daisuke Nakauchi; Takayuki Yanagida; Masanori Koshimizu; Keisuke Asai

doi:10.18494/SAM.2018.1927

New intrinsic scintillator with large effective atomic number: Tl₂HfCl₆ and Tl₂ZrCl₆ crystals for x-ray and gamma-ray detections

Yutaka Fujimoto, Keiichiro Saeki, Daisuke Nakauchi, Takayuki Yanagida, Masanori Koshimizu, Keisuke Asai

ENG - Applied Chemistry

Research output: Contribution to journal › Article

20 Citations (Scopus)

Abstract

We report on the photoluminescence and scintillation characterizations of new Tl₂HfCl₆ and Tl₂ZrCl₆ crystalline scintillators grown by the vertical Bridgman-Stockbarger method. Both Tl₂HfCl₆ and Tl₂ZrCl₆ crystals showed an intrinsic emission band peak at 450-470 nm under UV light and X-ray excitations. The scintillation light yields of Tl₂HfCl₆ and Tl₂ZrCl₆ reach 24200 and 50800 photons/MeV, respectively. Their energy resolutions at 662 keV are 17.7% for Tl₂HfCl₆ and 5.6% for Tl₂ZrCl₆. The scintillation decay time values of Tl₂HfCl₆ are 288 and 6340 ns; meanwhile, those of Tl₂ZrCl₆ are 696 and 2360 ns.

Original language	English
Pages (from-to)	1577-1583
Number of pages	7
Journal	Sensors and Materials
Volume	30
Issue number	7
DOIs	https://doi.org/10.18494/SAM.2018.1927
Publication status	Published - 2018 Jan 1

Keywords

Crystal growth
Scintillator
TlHfCl
TlZrCl

ASJC Scopus subject areas

Instrumentation
Materials Science(all)

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Fujimoto, Y., Saeki, K., Nakauchi, D., Yanagida, T., Koshimizu, M., & Asai, K. (2018). New intrinsic scintillator with large effective atomic number: Tl₂HfCl₆ and Tl₂ZrCl₆ crystals for x-ray and gamma-ray detections. Sensors and Materials, 30(7), 1577-1583. https://doi.org/10.18494/SAM.2018.1927

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abstract = "We report on the photoluminescence and scintillation characterizations of new Tl2HfCl6 and Tl2ZrCl6 crystalline scintillators grown by the vertical Bridgman-Stockbarger method. Both Tl2HfCl6 and Tl2ZrCl6 crystals showed an intrinsic emission band peak at 450-470 nm under UV light and X-ray excitations. The scintillation light yields of Tl2HfCl6 and Tl2ZrCl6 reach 24200 and 50800 photons/MeV, respectively. Their energy resolutions at 662 keV are 17.7% for Tl2HfCl6 and 5.6% for Tl2ZrCl6. The scintillation decay time values of Tl2HfCl6 are 288 and 6340 ns; meanwhile, those of Tl2ZrCl6 are 696 and 2360 ns.",

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author = "Yutaka Fujimoto and Keiichiro Saeki and Daisuke Nakauchi and Takayuki Yanagida and Masanori Koshimizu and Keisuke Asai",

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AU - Fujimoto, Yutaka

AU - Saeki, Keiichiro

AU - Nakauchi, Daisuke

AU - Yanagida, Takayuki

AU - Koshimizu, Masanori

AU - Asai, Keisuke

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AB - We report on the photoluminescence and scintillation characterizations of new Tl2HfCl6 and Tl2ZrCl6 crystalline scintillators grown by the vertical Bridgman-Stockbarger method. Both Tl2HfCl6 and Tl2ZrCl6 crystals showed an intrinsic emission band peak at 450-470 nm under UV light and X-ray excitations. The scintillation light yields of Tl2HfCl6 and Tl2ZrCl6 reach 24200 and 50800 photons/MeV, respectively. Their energy resolutions at 662 keV are 17.7% for Tl2HfCl6 and 5.6% for Tl2ZrCl6. The scintillation decay time values of Tl2HfCl6 are 288 and 6340 ns; meanwhile, those of Tl2ZrCl6 are 696 and 2360 ns.

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KW - TlZrCl

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