Usability of Cr-Doped Alumina in Dosimetry

被引：9

作者：

Einbergs, Ernests ^{[1
]}

Zolotarjovs, Aleksejs ^{[1
]}

Bite, Ivita ^{[1
]}

Laganovska, Katrina ^{[1
]}

Auzins, Krisjanis ^{[1
]}

Smits, Krisjanis ^{[1
]}

Trinkler, Laima ^{[1
]}

机构：

[1] Univ Latvia, Inst Solid State Phys, LV-1063 Riga, Latvia

来源：

CERAMICS-SWITZERLAND | 2019年 / 2卷 / 03期

关键词：

dosimetry; alumina; chromium; sol-gel; Al2O3; Cr; LUMINESCENCE; RADIATION; THERMOLUMINESCENCE; EXPOSURE;

D O I：

10.3390/ceramics2030040

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Dosimetry is a widespread material science field dealing with detection and quantification of ionizing radiation using electronic processes in materials. One of the main aspects that determines the performance of dosimeters is the type of defects the material contains. Crystalline lattice imperfections are formed around impurity ions, which may have a smaller or larger size, or different oxidation states compared to host ions. In this study, we show what effects Cr impurities have on the luminescent properties of alumina. Porous Al2O3:Cr microceramics synthesized using the sol-gel method showed a higher thermoluminescence response than a single crystal ruby. We have found that Cr2O3 concentration of 0.2 wt% was optimal; it yielded the highest X-ray luminescence and thermostimulated luminescence readout of all studied additive concentrations added to alumina during synthesis. Our results show that Cr doped alumina could potentially be used as a promising new material for dosimetry of ionizing radiation.

引用

页码：525 / 535

页数：11

共 21 条

[1]

AKSELROD MS, 1990, RADIAT PROT DOSIM, V32, P15

[2] A radiation dosimetry method using pulsed optically stimulated luminescence [J].