Dopant concentration dependence of radiation-induced positive hysteresis of Ce:GSO and Ce:GSOZ

Takayuki Yanagida; Yutaka Fujimoto; Kenichi Watanabe

doi:10.1016/j.radmeas.2013.12.006

Dopant concentration dependence of radiation-induced positive hysteresis of Ce:GSO and Ce:GSOZ

Takayuki Yanagida, Yutaka Fujimoto, Kenichi Watanabe

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

10 Citations (Scopus)

Abstract

Positive hysteresis and radiation tolerance to high-dose radiation exposure were investigated for Ce 0.5, 1, and 1.5%-doped Gd₂SiO₅ (GSO) and for Zr co-doped GSO with the same Ce concentrations (GSOZ). When they were irradiated by 200-800 Gy ⁶⁰Co in 200 Gy steps, all Ce-doped GSO samples exhibited light yield enhancement (positive hysteresis). On the other hand, the light yield of GSOZ decreased greatly. Ce 0.5%-doped GSO showed the highest positive hysteresis, with ∼20% light yield enhancement. When the Ce concentration was increased, the positive hysteresis became weaker.

Original language	English
Pages (from-to)	16-20
Number of pages	5
Journal	Radiation Measurements
Volume	61
DOIs	https://doi.org/10.1016/j.radmeas.2013.12.006
Publication status	Published - 2014 Feb
Externally published	Yes

Keywords

GSO
GSO:Ce
GSO:Ce Zr codoped
Gamma-ray
Positive hysteresis
Scintillation detector
Single crystal

ASJC Scopus subject areas

Radiation
Instrumentation

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title = "Dopant concentration dependence of radiation-induced positive hysteresis of Ce:GSO and Ce:GSOZ",

abstract = "Positive hysteresis and radiation tolerance to high-dose radiation exposure were investigated for Ce 0.5, 1, and 1.5%-doped Gd2SiO5 (GSO) and for Zr co-doped GSO with the same Ce concentrations (GSOZ). When they were irradiated by 200-800 Gy 60Co in 200 Gy steps, all Ce-doped GSO samples exhibited light yield enhancement (positive hysteresis). On the other hand, the light yield of GSOZ decreased greatly. Ce 0.5%-doped GSO showed the highest positive hysteresis, with ∼20% light yield enhancement. When the Ce concentration was increased, the positive hysteresis became weaker.",

keywords = "GSO, GSO:Ce, GSO:Ce Zr codoped, Gamma-ray, Positive hysteresis, Scintillation detector, Single crystal",

author = "Takayuki Yanagida and Yutaka Fujimoto and Kenichi Watanabe",

note = "Funding Information: This work was mainly supported by JST Sentan, A-step, and partially by Grants-in-Aid for Young Scientists (A)- 23686135 and Challenging Exploratory Research- 23656584 from the Ministry of Education, Culture, Sports, Science and Technology of the Japanese government (MEXT) . Partial assistance from the Yazaki Memorial Foundation for Science and Technology, Shimazu Sci. Foundation, Kato Foundation for Promotion of Science, and Nippon Sheet Glass Foundation for Materials Science and Engineering, Tokuyama Science foundation, Iketani Science and Technology Foundation, and The Asahi Glass Foundation are also gratefully acknowledged.",

year = "2014",

month = feb,

doi = "10.1016/j.radmeas.2013.12.006",

language = "English",

volume = "61",

pages = "16--20",

journal = "Radiation Measurements",

issn = "1350-4487",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Dopant concentration dependence of radiation-induced positive hysteresis of Ce:GSO and Ce:GSOZ

AU - Yanagida, Takayuki

AU - Fujimoto, Yutaka

AU - Watanabe, Kenichi

N1 - Funding Information: This work was mainly supported by JST Sentan, A-step, and partially by Grants-in-Aid for Young Scientists (A)- 23686135 and Challenging Exploratory Research- 23656584 from the Ministry of Education, Culture, Sports, Science and Technology of the Japanese government (MEXT) . Partial assistance from the Yazaki Memorial Foundation for Science and Technology, Shimazu Sci. Foundation, Kato Foundation for Promotion of Science, and Nippon Sheet Glass Foundation for Materials Science and Engineering, Tokuyama Science foundation, Iketani Science and Technology Foundation, and The Asahi Glass Foundation are also gratefully acknowledged.

PY - 2014/2

Y1 - 2014/2

N2 - Positive hysteresis and radiation tolerance to high-dose radiation exposure were investigated for Ce 0.5, 1, and 1.5%-doped Gd2SiO5 (GSO) and for Zr co-doped GSO with the same Ce concentrations (GSOZ). When they were irradiated by 200-800 Gy 60Co in 200 Gy steps, all Ce-doped GSO samples exhibited light yield enhancement (positive hysteresis). On the other hand, the light yield of GSOZ decreased greatly. Ce 0.5%-doped GSO showed the highest positive hysteresis, with ∼20% light yield enhancement. When the Ce concentration was increased, the positive hysteresis became weaker.

AB - Positive hysteresis and radiation tolerance to high-dose radiation exposure were investigated for Ce 0.5, 1, and 1.5%-doped Gd2SiO5 (GSO) and for Zr co-doped GSO with the same Ce concentrations (GSOZ). When they were irradiated by 200-800 Gy 60Co in 200 Gy steps, all Ce-doped GSO samples exhibited light yield enhancement (positive hysteresis). On the other hand, the light yield of GSOZ decreased greatly. Ce 0.5%-doped GSO showed the highest positive hysteresis, with ∼20% light yield enhancement. When the Ce concentration was increased, the positive hysteresis became weaker.

KW - GSO

KW - GSO:Ce

KW - GSO:Ce Zr codoped

KW - Gamma-ray

KW - Positive hysteresis

KW - Scintillation detector

KW - Single crystal

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DO - 10.1016/j.radmeas.2013.12.006

M3 - Article

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VL - 61

SP - 16

EP - 20

JO - Radiation Measurements

JF - Radiation Measurements

SN - 1350-4487

ER -

Dopant concentration dependence of radiation-induced positive hysteresis of Ce:GSO and Ce:GSOZ

Abstract

Keywords

ASJC Scopus subject areas

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