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Vol. 34, No. 8(3), S&M3042

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Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
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Sensors and Materials, Volume 22, Number 5 (2010)
Copyright(C) MYU K.K.
pp. 235-245
S&M805 Research Paper of Special Issue
https://doi.org/10.18494/SAM.2010.643
Published: July 9, 2010

Ionizing Radiation Sensor Utilizing Radiophotoluminescence in Ag+-Activated Phosphate Glass and Its Application to Environmental Radiation Monitoring [PDF]

Yuka Miyamoto, Kazuya Kinoshita, Haruki Kobayashi, Akihiko Fujiwara, Shin Koyama, Yoshinori Takei, Hidehito Nanto, Takayoshi Yamamoto, Toshio Kurobori, Takayuki Yanagida, Akira Yoshikawa, Masaaki Sakakura, Yasuhiko Shimotsuma, Kiyotaka Miura and Kazuyuki Hirao

(Received October 16, 2009; Accepted April 26, 2010)

Keywords: radiophotoluminescence, glass dosemeter, Ag+-activated phosphate glass, photoreduction, femtosecond laser pulse, environmental radiation

Optical properties such as optical absorption spectrum and radiophotoluminescence (RPL) emission and excitation spectra of Ag+-activated phosphate glass before and after X-ray irradiation were investigated in this study. It is found that the RPL emission spectrum consists of two emission band peaks at about 460 (blue luminescence) and 560 nm (orange luminescence). The excitation spectrum of RPL consists of two excitation bands at about 315 and 360 nm. It is also found that 560 nm RPL peak intensity gradually increases with time after exposure to X-rays, which strongly suggests that the 560 nm RPL peak is ascribed to Ag2+ ions. The 460 nm RPL peak is ascribed to Ag0 ions, because a blue luminescence is observed in femtosecond pulsed laser light-irradiated glass, in which Ag0 ions are produced by the photoreduction process of Ag+ ions in glass. The application of the RPL phenomenon in Ag+-activated phosphate glass to the environmental monitoring of ionizing natural radiation is also demonstrated.

Corresponding author: Hidehito Nanto


Cite this article
Yuka Miyamoto, Kazuya Kinoshita, Haruki Kobayashi, Akihiko Fujiwara, Shin Koyama, Yoshinori Takei, Hidehito Nanto, Takayoshi Yamamoto, Toshio Kurobori, Takayuki Yanagida, Akira Yoshikawa, Masaaki Sakakura, Yasuhiko Shimotsuma, Kiyotaka Miura and Kazuyuki Hirao, Ionizing Radiation Sensor Utilizing Radiophotoluminescence in Ag+-Activated Phosphate Glass and Its Application to Environmental Radiation Monitoring, Sens. Mater., Vol. 22, No. 5, 2010, p. 235-245.



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