Optically stimulated luminescence in Tm-doped calcium fluoride phosphor crystal for application to a novel passive type dosimeter

Hidehito Nanto; Ryota Nakagawa; Takayuki Yanagida; Yutaka Fujimoto; Kentaro Fukuda; Yuka Miyamoto; Kazuki Hirasawa; Yoshinori Takei

Optically stimulated luminescence in Tm-doped calcium fluoride phosphor crystal for application to a novel passive type dosimeter

Hidehito Nanto, Ryota Nakagawa, Takayuki Yanagida, Yutaka Fujimoto, Kentaro Fukuda, Yuka Miyamoto, Kazuki Hirasawa, Yoshinori Takei

ENG - Applied Chemistry

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

13 Citations (Scopus)

Abstract

An intense optically stimulated luminescence (OSL) with four emission bands in the wavelength range from 290 to 420 nm is observed for the first time in X-ray-irradiated Tm-doped CaF₂ (CaF₂:Tm) phosphor crystal. The OSL intensity increases almost linearly with increasing X-ray absorbed dose. Thermally stimulated luminescence (TSL) glow curves with four peaks are also observed in X-ray-irradiated CaF₂:Tm phosphor crystal. It is confirmed that the shape of the TSL glow curve in X-ray-irradiated CaF₂:Tm phosphor crystal is the same as that of a commercially available dosimeter (TLD-300). An OSL emission and stimulation mechanism of X-ray-irradiated CaF₂:Tm phosphor crystal is proposed.

Original language	English
Pages (from-to)	277-282
Number of pages	6
Journal	Sensors and Materials
Volume	27
Issue number	3
Publication status	Published - 2015

Keywords

Calcium fluoride
Optically stimulated luminescence
Passive type dosimeter
Thermally stimulated luminescence
Thulium

ASJC Scopus subject areas

Materials Science(all)
Instrumentation

Cite this

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title = "Optically stimulated luminescence in Tm-doped calcium fluoride phosphor crystal for application to a novel passive type dosimeter",

abstract = "An intense optically stimulated luminescence (OSL) with four emission bands in the wavelength range from 290 to 420 nm is observed for the first time in X-ray-irradiated Tm-doped CaF2 (CaF2:Tm) phosphor crystal. The OSL intensity increases almost linearly with increasing X-ray absorbed dose. Thermally stimulated luminescence (TSL) glow curves with four peaks are also observed in X-ray-irradiated CaF2:Tm phosphor crystal. It is confirmed that the shape of the TSL glow curve in X-ray-irradiated CaF2:Tm phosphor crystal is the same as that of a commercially available dosimeter (TLD-300). An OSL emission and stimulation mechanism of X-ray-irradiated CaF2:Tm phosphor crystal is proposed.",

keywords = "Calcium fluoride, Optically stimulated luminescence, Passive type dosimeter, Thermally stimulated luminescence, Thulium",

author = "Hidehito Nanto and Ryota Nakagawa and Takayuki Yanagida and Yutaka Fujimoto and Kentaro Fukuda and Yuka Miyamoto and Kazuki Hirasawa and Yoshinori Takei",

year = "2015",

language = "English",

volume = "27",

pages = "277--282",

journal = "Sensors and Materials",

issn = "0914-4935",

publisher = "M Y U Scientific Publishing Division",

number = "3",

}

TY - JOUR

T1 - Optically stimulated luminescence in Tm-doped calcium fluoride phosphor crystal for application to a novel passive type dosimeter

AU - Nanto, Hidehito

AU - Nakagawa, Ryota

AU - Yanagida, Takayuki

AU - Fujimoto, Yutaka

AU - Fukuda, Kentaro

AU - Miyamoto, Yuka

AU - Hirasawa, Kazuki

AU - Takei, Yoshinori

PY - 2015

Y1 - 2015

N2 - An intense optically stimulated luminescence (OSL) with four emission bands in the wavelength range from 290 to 420 nm is observed for the first time in X-ray-irradiated Tm-doped CaF2 (CaF2:Tm) phosphor crystal. The OSL intensity increases almost linearly with increasing X-ray absorbed dose. Thermally stimulated luminescence (TSL) glow curves with four peaks are also observed in X-ray-irradiated CaF2:Tm phosphor crystal. It is confirmed that the shape of the TSL glow curve in X-ray-irradiated CaF2:Tm phosphor crystal is the same as that of a commercially available dosimeter (TLD-300). An OSL emission and stimulation mechanism of X-ray-irradiated CaF2:Tm phosphor crystal is proposed.

AB - An intense optically stimulated luminescence (OSL) with four emission bands in the wavelength range from 290 to 420 nm is observed for the first time in X-ray-irradiated Tm-doped CaF2 (CaF2:Tm) phosphor crystal. The OSL intensity increases almost linearly with increasing X-ray absorbed dose. Thermally stimulated luminescence (TSL) glow curves with four peaks are also observed in X-ray-irradiated CaF2:Tm phosphor crystal. It is confirmed that the shape of the TSL glow curve in X-ray-irradiated CaF2:Tm phosphor crystal is the same as that of a commercially available dosimeter (TLD-300). An OSL emission and stimulation mechanism of X-ray-irradiated CaF2:Tm phosphor crystal is proposed.

KW - Calcium fluoride

KW - Optically stimulated luminescence

KW - Passive type dosimeter

KW - Thermally stimulated luminescence

KW - Thulium

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M3 - Article

AN - SCOPUS:84930060205

SN - 0914-4935

VL - 27

SP - 277

EP - 282

JO - Sensors and Materials

JF - Sensors and Materials

IS - 3

ER -

Optically stimulated luminescence in Tm-doped calcium fluoride phosphor crystal for application to a novel passive type dosimeter

Abstract

Keywords

ASJC Scopus subject areas

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