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Photonics 2016, 3(2), 23; doi:10.3390/photonics3020023

Aluminum Nitride Ceramic as an Optically Stimulable Luminescence Dosimeter Plate

1
Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan
2
Tokuyama Corporation, 1-1 Mikage-cho, Shunan-shi, Yamaguchi 745-8648, Japan
3
Department of Electrical and Computer Engineering, University of Saskatchewan, 57 Campus Dr., Saskatoon, SK S7N 5A9, Canada
*
Author to whom correspondence should be addressed.
Received: 4 April 2016 / Revised: 25 April 2016 / Accepted: 27 April 2016 / Published: 30 April 2016
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Abstract

Photostimulable storage phosphors have been used in a wide range of applications including radiation measurements in one- and two-dimensional spaces, called point dosimetry and radiography. In this work, we report that an aluminum nitride (AlN) ceramic plate, which is practically used as a heat sink (SHAPAL®, Tokuyama Corp., Yamaguchi, Japan), shows good optically-stimulated luminescence (OSL) properties with sufficiently large signal and capability for imaging applications, and we have characterized the AlN plate for OSL applications. Upon interaction with X-rays, the sample color turns yellowish, due to a radiation-induced photoabsorption band in the UV-blue range below ~500 nm. After irradiating the sample with X-rays, an intense OSL emission can be observed in the UV (360 nm) spectral region during stimulation by red light. Although our measurement setup is not optimized, dose detection was confirmed as low as ~3 mGy to over 20 Gy. Furthermore, we have successfully demonstrated that the SHAPAL® AlN ceramic plate has great potential to be used as an imaging plate in radiography. View Full-Text
Keywords: AlN; OSL; dosimeter; X-rays AlN; OSL; dosimeter; X-rays
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Okada, G.; Fukuda, K.; Kasap, S.; Yanagida, T. Aluminum Nitride Ceramic as an Optically Stimulable Luminescence Dosimeter Plate. Photonics 2016, 3, 23.

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