TlSr2Cl5: New intrinsically activated crystalline scintillator

Miki Arai; Keisuke Takahashi; Yutaka Fujimoto; Masanori Koshimizu; Takayuki Yanagida; Keisuke Asai

doi:10.1016/j.radmeas.2020.106328

TlSr₂Cl₅: New intrinsically activated crystalline scintillator

Miki Arai, Keisuke Takahashi, Yutaka Fujimoto, Masanori Koshimizu, Takayuki Yanagida, Keisuke Asai

ENG - Applied Chemistry

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

We report the luminescence and scintillation properties of TlSr₂Cl₅ crystals, which have a large effective atomic number (Z_eff = 63.7), for application in X-ray and gamma ray detection. TlSr₂Cl₅ crystals were prepared under vacuum using the self-seeding solidification method. The scintillation emission bands were observed at 430 and 490 nm, which are close to the emission wavelengths of TlMgCl₃ and TlCdCl₃. The peak wavelengths were characteristic of self-activated thallium-based chloride crystals. The scintillation decay time constants were estimated to be 7.5 ns (61%), 99 ns (7%), and 1375 ns (32%). These decay time constants are close to those of TlMgCl₃ and TlCdCl₃ and are also characteristic of self-activated thallium-based chloride crystals. The light yield of TlSr₂Cl₅ was estimated to be approximately 19,000 photons/MeV, which is higher than that of Gd₂SiO₅(Ce) (GSO) (10,000 photons/MeV) and close to that of Lu₂SiO₅(Ce) (LSO) (27,000 photons/MeV).

Original language	English
Article number	106328
Journal	Radiation Measurements
Volume	134
DOIs	https://doi.org/10.1016/j.radmeas.2020.106328
Publication status	Published - 2020 Jun

Keywords

Luminescence
Scintillator
Self-activated
TlSr2Cl5

ASJC Scopus subject areas

Radiation
Instrumentation

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10.1016/j.radmeas.2020.106328

Cite this

@article{463015e814f64043a4bdba242acc6e71,

title = "TlSr2Cl5: New intrinsically activated crystalline scintillator",

abstract = "We report the luminescence and scintillation properties of TlSr2Cl5 crystals, which have a large effective atomic number (Zeff = 63.7), for application in X-ray and gamma ray detection. TlSr2Cl5 crystals were prepared under vacuum using the self-seeding solidification method. The scintillation emission bands were observed at 430 and 490 nm, which are close to the emission wavelengths of TlMgCl3 and TlCdCl3. The peak wavelengths were characteristic of self-activated thallium-based chloride crystals. The scintillation decay time constants were estimated to be 7.5 ns (61%), 99 ns (7%), and 1375 ns (32%). These decay time constants are close to those of TlMgCl3 and TlCdCl3 and are also characteristic of self-activated thallium-based chloride crystals. The light yield of TlSr2Cl5 was estimated to be approximately 19,000 photons/MeV, which is higher than that of Gd2SiO5(Ce) (GSO) (10,000 photons/MeV) and close to that of Lu2SiO5(Ce) (LSO) (27,000 photons/MeV).",

keywords = "Luminescence, Scintillator, Self-activated, TlSr2Cl5",

author = "Miki Arai and Keisuke Takahashi and Yutaka Fujimoto and Masanori Koshimizu and Takayuki Yanagida and Keisuke Asai",

note = "Funding Information: This research was supported by a Grant-in-Aid for Scientific Research (A) (No. 18H03890 , 2018–2021). A part of this research is based on the Cooperative Research Project of Research Center for Biomedical Engineering, Ministry of Education, Culture, Sports, Science and Technology. Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = jun,

doi = "10.1016/j.radmeas.2020.106328",

language = "English",

volume = "134",

journal = "Radiation Measurements",

issn = "1350-4487",

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T1 - TlSr2Cl5

T2 - New intrinsically activated crystalline scintillator

AU - Arai, Miki

AU - Takahashi, Keisuke

AU - Fujimoto, Yutaka

AU - Koshimizu, Masanori

AU - Yanagida, Takayuki

AU - Asai, Keisuke

N1 - Funding Information: This research was supported by a Grant-in-Aid for Scientific Research (A) (No. 18H03890 , 2018–2021). A part of this research is based on the Cooperative Research Project of Research Center for Biomedical Engineering, Ministry of Education, Culture, Sports, Science and Technology. Publisher Copyright: © 2020 Elsevier Ltd

PY - 2020/6

Y1 - 2020/6

N2 - We report the luminescence and scintillation properties of TlSr2Cl5 crystals, which have a large effective atomic number (Zeff = 63.7), for application in X-ray and gamma ray detection. TlSr2Cl5 crystals were prepared under vacuum using the self-seeding solidification method. The scintillation emission bands were observed at 430 and 490 nm, which are close to the emission wavelengths of TlMgCl3 and TlCdCl3. The peak wavelengths were characteristic of self-activated thallium-based chloride crystals. The scintillation decay time constants were estimated to be 7.5 ns (61%), 99 ns (7%), and 1375 ns (32%). These decay time constants are close to those of TlMgCl3 and TlCdCl3 and are also characteristic of self-activated thallium-based chloride crystals. The light yield of TlSr2Cl5 was estimated to be approximately 19,000 photons/MeV, which is higher than that of Gd2SiO5(Ce) (GSO) (10,000 photons/MeV) and close to that of Lu2SiO5(Ce) (LSO) (27,000 photons/MeV).

AB - We report the luminescence and scintillation properties of TlSr2Cl5 crystals, which have a large effective atomic number (Zeff = 63.7), for application in X-ray and gamma ray detection. TlSr2Cl5 crystals were prepared under vacuum using the self-seeding solidification method. The scintillation emission bands were observed at 430 and 490 nm, which are close to the emission wavelengths of TlMgCl3 and TlCdCl3. The peak wavelengths were characteristic of self-activated thallium-based chloride crystals. The scintillation decay time constants were estimated to be 7.5 ns (61%), 99 ns (7%), and 1375 ns (32%). These decay time constants are close to those of TlMgCl3 and TlCdCl3 and are also characteristic of self-activated thallium-based chloride crystals. The light yield of TlSr2Cl5 was estimated to be approximately 19,000 photons/MeV, which is higher than that of Gd2SiO5(Ce) (GSO) (10,000 photons/MeV) and close to that of Lu2SiO5(Ce) (LSO) (27,000 photons/MeV).

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KW - TlSr2Cl5

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