Comparative study of dosimeter properties between Al2O3 transparent ceramic and single crystal

被引：19

作者：

Kato, Takumi ^{[1
]}

Kawano, Naoki ^{[1
]}

Okada, Go ^{[1
]}

Kawaguchi, Noriaki ^{[1
]}

Yanagida, Takayuki ^{[1
]}

机构：

[1] Nara Inst Sci & Technol NAIST, 8916-5 Takayama Cho, Ikoma, Nara 6300192, Japan

来源：

RADIATION MEASUREMENTS | 2017年 / 107卷

基金：

日本科学技术振兴机构;

关键词：

Transparent ceramic; Al2O3; Scintillator; Dosimeter; OPTICALLY STIMULATED LUMINESCENCE; F-CENTER; SCINTILLATION; THERMOLUMINESCENCE; EMISSION; NEUTRON; OSL;

D O I：

10.1016/j.radmeas.2017.09.006

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

We have synthesized the Al2O3 transparent ceramic by using spark plasma sintering (SPS) and investigated the dosimeter and scintillation properties for X-ray detections, in comparison with the single crystal. Under X-ray irradiation, emissions at 300, 400 and 693 nm were observed in both the samples. To identify the origins of these emissions, scintillation decay times were investigated. Based on the results, emissions at 300, 400 and 693 nm are attributed to F+ centers, F centers and Cr3+ impurity ions, respectively. The thermally-stimulated luminescence (TSL) glow curves of both the samples showed a main peak around 50 degrees C. In addition, glow peaks were observed at 190, 290 and 360 degrees C. The TSL spectra had broad emission bands in the 300, 400 and 693 nm, which approximately agreed with the scintillation spectra. The TSL response was confirmed to be linear to the irradiation dose for transparent ceramic over the dose range from 0.3 to 1000 mGy while the sensitivity of the single crystal was lower and the response range confirmed was from 30 to 1000 mGy. (C) 2017 Published by Elsevier Ltd.

引用

页码：43 / 47

页数：5

共 44 条

[1]

Akselrod AE, 2002, RADIAT PROT DOSIM, V100, P217, DOI 10.1093/oxfordjournals.rpd.a005850

[2] Thermal quenching of F centre luminescence in Al2O3:C [J].