Dosimetric properties of Al2O3 transparent ceramics doped with C

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:435

Article; Proceedings Paper

Kato, Takumi¹  Kawano, Naoki¹  Okada, Go¹  Kawaguchi, Noriaki¹  Yanagida, Takayuki¹ 

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

关键词: Transparent ceramic;    Al2O3;    C;    Dosimeter;    TSL;    Scintillation;   

DOI  :  10.1016/j.nimb.2017.12.013

来源: Elsevier

【 摘 要 】

We have investigated scintillation and thermally-stimulated luminescence (TSL) dosimetric properties of Al2O3 transparent ceramics doped with different concentrations of C ions (0.001, 0.01 and 0.1%). The samples were synthesized by the Spark Plasma Sintering (SPS) technique. All the samples showed scintillation with emission peaks at 310, 410 and 693 nm under X-ray irradiation. Based on the scintillation decay times measured, the origins of emissions at 310, 410 and 693 nm were attributed to F+ centers, F centers and Cr3+ impurity ions, respectively. The samples show notable TSL with a glow curve consisting of peaks at 30, 100, 165, 230, 330 and 405 degrees C with much higher intensities than those of undoped Al2O3 transparent ceramics. A TSL response was confirmed to be linear to the irradiation dose over a range from 0.1 to 1000 mGy.

【 授权许可】

Free