Non-doped Na2CO3 Ceramics as a New Radio-photoluminescence (RPL) Material

In this letter, we report a new radio-photoluminescence (RPL) material. RPL is a phenomenon that new luminescent centers are generated by ionizing radiations. Sintered Na2CO3 ceramics in a vacuum showed PL band peaking around 430 nm under 340 ± 40 nm excitation in which the intensity increases by X-...

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Bibliographic Details
Published in:Chemistry letters 2017, Vol.46 (9), p.1383-1385
Main Authors: Nakamura, Fumiya, Kato, Takumi, Nakauchi, Daisuke, Okada, Go, Kawano, Naoki, Kawaguchi, Noriaki, Yanagida, Takayuki
Format: Article
Language:eng ; jpn
Subjects:
Ceramics
Dosimeters
Photoluminescence
Sodium carbonate
X ray irradiation
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Summary:In this letter, we report a new radio-photoluminescence (RPL) material. RPL is a phenomenon that new luminescent centers are generated by ionizing radiations. Sintered Na2CO3 ceramics in a vacuum showed PL band peaking around 430 nm under 340 ± 40 nm excitation in which the intensity increases by X-ray irradiation. This evolution indicates a generation of a luminescent center by irradiation, a clear evidence of RPL. The majority of existing RPL materials are typically doped with luminescent ions; however, the present material was not intentionally doped. The RPL signal was observed as low as 0.1 mGy, which is an equivalent sensitivity of a commercial RPL dosimeter. For these reasons, the Na2CO3 ceramic is a promising candidate for RPL dosimeters.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.170580