期刊
JOURNAL OF LUMINESCENCE
卷 192, 期 -, 页码 316-320出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2017.06.067
关键词
Transparent ceramic; MgO; Ce ion; Dosimeter; TSL; PSL
类别
资金
- Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) [26249147]
- JST A-step
- Grants-in-Aid for Scientific Research [17J09501, 17H01375] Funding Source: KAKEN
We have investigated thermally-stimulated luminescence (TSL) and photo-stimulated luminescence (PSL) properties of MgO transparent ceramic doped with different concentrations of Ce ion (0.001%, 0.01% and 0.1%), together with the photoluminescence (PL) and scintillation properties. The transparent ceramic samples were fabricated by a Spark Plasma Sintering (SPS) method. The measurable PL signal was only detected for the 0.001% Ce doped MgO peaking around 480 nm. From decay constants of the PL emission, it was confirmed that this peak was due to the 5d-4f transitions of Ce3+ ion. In the scintillation spectrum of Ce-doped MgO, a broad emission was detected which can be deconvoluted by three Gaussian bands peaking at 330, 406 and 480 nm. TSL glow curve of all the samples showed a main dosimetric peak at 140 degrees C. The TSL signal was confirmed to respond linearly to irradiation dose over the dose range from 0.1 to 1000 mGy. Furthermore, the 0.001% Ce doped MgO showed not only TSL but also PSL.
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