Characterizations of a Hot-Pressed Polycrystalline Spinel:Ce Scintillator

被引：43

作者：

Chen, Ching-Fong ^{[1
]}

Doty, F. P. ^{[2
]}

Houk, Ronald J. T. ^{[2
]}

Loutfy, Raouf O. ^{[3
]}

Volz, Heather M. ^{[1
]}

Yang, Pin ^{[4
]}

机构：

[1] Los Alamos Natl Lab, Mat Sci Technol Div, Los Alamos, NM 87545 USA

[2] Sandia Natl Labs, Livermore, CA 94511 USA

[3] MER Corp, Tucson, AZ 85706 USA

[4] Sandia Natl Labs, Albuquerque, NM 87185 USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2010年 / 93卷 / 08期

基金：

美国能源部;

关键词：

ENERGY-RESOLUTION SCINTILLATOR; TRANSPARENT; LUMINESCENCE; FABRICATION;

D O I：

10.1111/j.1551-2916.2010.03721.x

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：

Here, we report a new polycrystalline ceramic scintillator for possible use in gamma-ray detection and medical imaging applications. The goal was to develop a cerium-doped spinel (MgAl(2)O(4):Ce), which can be processed utilizing ceramic forming techniques. High-purity MgAl(2)O(4) powders were used as the starting materials. Lithium fluoride (LiF) was used as a sintering aid and CeO(2) powder was used as the dopant. The mixed and dried powders were hot pressed in a vacuum environment to achieve high-density MgAl(2)O(4):Ce. The hot-pressed sample shows a transparent polycrystalline appearance. In-line transmission was measured to determine the transparency of the structure. Microstructures were characterized using X-ray diffraction and scanning electron microscopy. Fluorescence absorption and emission peaks were also measured in addition to the decay time measurement.

引用

页码：2399 / 2402

页数：4

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