Radiophotoluminescence from silver-doped phosphate glass

Miyamoto, Yuka; Takei, Yoshinori; Nanto, Hidehito; Kurobori, Toshio; Konnai, Akiko; Yanagida, Takayuki; Yoshikawa, Akira; Shimotsuma, Yasuhiko; Sakakura, Masaaki; Miura, Kenichiro; Hirao, Kazuyuki; Nagashima, Y.; Yamamoto, Tatsuya

doi:10.1016/j.radmeas.2011.05.048

Cited by 103 publications

(63 citation statements)

References 7 publications

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“…9) By stimulation of light (optically stimulated luminescence, OSL) or heat (thermally stimulated luminescence, TSL), the absorbed energy is released and read out from dosimeter materials. In personal dosimeter applications, ceramic Ti and Mg doped LiF 10) for TSL, crystalline powder C:Al 2 O 3 for OSL, 9) and Ag-doped phosphate glass for radiophotoluminescence (RPL) 11) are practically used. The present work demonstrates basic optical, scintillation and TSL properties of ceramic AlN fabricated by Tokuyama Corp. for a heat sink application, namely SHAPAL.…”

Section: Introductionmentioning

confidence: 99%

Dosimeter properties of AlN

Yanagida

Fujimoto

Kawaguchi³

et al. 2013

J. Ceram. Soc. Japan

188

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Optical, scintillation, and dosimeter properties of AlN ceramic were reported. AlN sample was SHAPAL, a commercial product of Tokuyama Corp. for mainly a heat sink application. From ultra violet to near infrared wavelengths, it showed 0.021% transmittance with visibly translucent appearance. In photoluminescence (PL), it exhibited mainly two emission bands around 340 and 550 nm with primary decay times of 0.92 and 0.24 ns, respectively. X-ray induced radioluminescence spectrum was investigated and 340 nm peak showed high emission intensity. As a dosimeter property, thermally stimulated luminescence (TSL) was studied and glow peaks appeared at 80 and 320°C. The linearity between the irradiated dose and TSL intensity was studied and AlN ceramic exhibited a good linear response from 0.002 to 0.1 Gy.

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Section: Introductionmentioning

confidence: 99%

Dosimeter properties of AlN

Yanagida

Fujimoto

Kawaguchi³

et al. 2013

J. Ceram. Soc. Japan

188

View full text Add to dashboard Cite

show abstract

“…It is known that RPL in commercial glass is based on the change of Ag + ions into Ag 0 and Ag 2+ after irradiation. (4) This result suggests that a similar change occurs in the valence state of Ag in all the samples. These new emission bands are located at longer wavelengths with increasing atomic number of the alkali metal in the host.…”

Section: Pl and Pl Excitation Spectra Before And After X-ray Irradiationmentioning

confidence: 55%

“…In previous studies, the formation of fluorescent centers in Ag-doped phoshate glasses was investigated by Schulman and Compton, (1) Yokota, (2,3) and Miyamoto and co-workers (4,5) by optical spectroscopy or electron spin resonance (ESR) measurements. The results indicate that the valence state of Ag + ions in the glasses changes upon exposure to X-ray, gamma ray, or intense laser irradiation.…”

Section: Introductionmentioning

confidence: 99%

Radiophotoluminescence Properties of Ag-Doped Phosphate Glasses Containing Different Alkali Metal Cations

2016

Sensors and Materials

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For many years, the radiophotoluminescence (RPL) of Ag-doped phosphate glass has been exploited in personal dosimetry. In this study, we investigated the optical properties of Ag-doped phosphate glasses of various compositions containing alkali metals as cations. We found that the peak wavelengths of the RPL bands depend on alkali metal species. Corresponding excitation bands also appeared in the excitation spectra after irradiation. In addition, we observed differences in the stability of the RPL fluorescent centers after heat treatment. These results indicate that RPL fluorescent center formation and initialization processes depend on the alkali metal species in the host phosphate glasses.

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“…The monitoring system is composed of a twodimensional read-out apparatus and a laptop personal computer. To measure a two-dimensional RPL image, the RPL readout apparatus is composed of an x-y stage (A4 size: 195 × 327 cm 2 ) and a UV light emitting diode (LED). The process of obtaining a two-dimensional RPL image from the sheet-type glass dosimeter is shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

“…It has been reported that both Ag 0 and Ag 2+ ions can be the luminescent centers in the phosphate glasses. (1)(2)(3)(4)(5) The RPL intensity is proportional to the amount of ionizing radiation. The RPL glass dosimeter has excellent characteristics such as homogeneous and stable radiation sensitivity, negligible fading, and reliable repeatability in radiation dose measurement.…”

Section: Introductionmentioning

confidence: 99%

Visualization of Radiation Dose Distribution Utilizing Radiophotoluminescence in Glass Dosimeter

2017

Sensors and Materials

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In the decommissioning of a nuclear power plant, especially for the decontamination of radioactive substances caused by the 2011 Fukushima nuclear power plant accident, which has affected reconstruction after the earthquake, dose evaluation and validation of the decontamination effect are very important. To prepare a novel passive-type dosimeter system, which can be applied to radiation dose monitoring and visualization of the two-dimensional distribution of ionizing radiation in a contaminated area, we tried to develop bead-and sheet-type glass dosimeters utilizing the radiophotoluminescence (RPL) phenomenon in Ag + -doped phosphate glass. It is confirmed that the bead-type glass dosimeter with a diameter of about 50 μm exhibits an intense RPL. It is found that the sheet-type glass dosimeter, which is made of bead-type glasses, is useful for the monitoring of radiation dose in a wide dose range and the visualization of dose distribution.

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Radiophotoluminescence from silver-doped phosphate glass

Cited by 103 publications

References 7 publications

Dosimeter properties of AlN

Dosimeter properties of AlN

Radiophotoluminescence Properties of Ag-Doped Phosphate Glasses Containing Different Alkali Metal Cations

Visualization of Radiation Dose Distribution Utilizing Radiophotoluminescence in Glass Dosimeter

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