期刊
CERAMICS INTERNATIONAL
卷 42, 期 5, 页码 5617-5622出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2015.12.070
关键词
Transparent ceramic; MgO; Scintillator; Dosimeter; TSL
资金
- Ministry of Education, Culture, Sports, Science and Technology of the Japanese government (MEXT) [26249147]
- JST A-step
- Grants-in-Aid for Scientific Research [26249147] Funding Source: KAKEN
We have synthesized a MgO transparent ceramic by spark plasma sintering (SPS) and studied the dosimeter properties for X-ray detections, in comparison with the single crystal form. Further, we have characterized the optical and scintillation properties. Despite the same material compositions, the photoluminescence (PL) of the ceramic sample showed dominantly around 450 nm whereas the single crystal sample had a dominant emission in the NIR range. The PL lifetime of 450 nm were measured to be similar to 10 and similar to 50 ns which were typical for emissions by F+ center in MgO. The scintillation spectra were similar to those observed in PL, but the lifetime was much longer on the micro-second scale. The TSL glow curves of MgO ceramic showed a main peak around 140 degrees C. The TSL spectrum at 140 degrees C had a broad emission band in the 300-400 range and around 600 and 750 nm, which approximately coincide with the scintillation spectra. The TSL response was confirmed to be linear to the irradiation dose for both samples over the dose range from 0.1 to 1000 mGy. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据