Correlation between crystal grain sizes of transparent ceramics and scintillation light yields

被引：16

作者：

Fukabori, Akihiro ^{[1
]}

An, Liqiong ^{[1
]}

Ito, Akihiko ^{[1
]}

Chani, Valery ^{[1
]}

Kamada, Kei ^{[2
]}

Yoshikawa, Akira ^{[1
,3
]}

Ikegami, Takayasu ^{[4
]}

Goto, Takashi ^{[1
]}

机构：

[1] Tohoku Univ, IMR, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Furukawa Co Ltd, Tsukuba, Ibaraki 3050856, Japan

[3] Tohoku Univ, NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

[4] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

来源：

CERAMICS INTERNATIONAL | 2012年 / 38卷 / 03期

关键词：

Y2O3; Scintillators; Transparent ceramics; Crystal grain size; Scintillation light yields; LUTETIUM OXIDE; LUMINESCENCE; Y2O3; EXCITONS;

D O I：

10.1016/j.ceramint.2011.10.052

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：

Light yields of Y2O3 ceramics are different from specimen to specimen. Nature of this phenomenon is not clear yet. Furthermore, origin of emission peaks for Y2O3 is not well understood. The results reported suggest that the emission derived from trapped excitons originates from the defects accumulated in the grain boundaries of the ceramics. In this paper, average grain size is introduced in order to evaluate defects inside the ceramics. Relationship between average crystal grain size and scintillation light yield is demonstrated. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：2119 / 2123

页数：5

共 18 条

[1] Two-step pressure sintering of transparent lutetium oxide by spark plasma sintering [J].

An, Liqiong ;

Ito, Akihiko ;

Goto, Takashi .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2011, 31 (09) :1597-1602

[2] Fabrication of Transparent Lutetium Oxide by Spark Plasma Sintering [J].

An, Liqiong ;

Ito, Akihiko ;

Goto, Takashi .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2011, 94 (03) :695-698

[3]

BLASSE G, 1991, EUR J SOL STATE INOR, V28, P767

[4]

Feigelson R., 2011, 18 AM C CRYST GROWTH

[5] Optical and scintillation characteristics of Y2O3 transparent ceramic [J].

Fukabori, Akihiro ;

Yanagida, Takayuki ;

Pejchal, Jan ;

Maeo, Shuji ;

Yokota, Yuui ;

Yoshikawa, Akira ;

Ikegami, Takayasu ;

Moretti, Federico ;

Kamada, Kei .

JOURNAL OF APPLIED PHYSICS, 2010, 107 (07)

[6] Induced emission cross section of a possible laser line in Nd:Y2O3 ceramics at 1.095 μm [J].

Fukabori, Akihiro ;

Sekita, Masami ;

Ikegami, Takayasu ;

Iyi, Nobuo ;

Komatsu, Toshiki ;

Kawamura, Masayuki ;

Suzuki, Makoto .

JOURNAL OF APPLIED PHYSICS, 2007, 101 (04)

[7] Ceramic scintillators [J].

Greskovich, C ;

Duclos, S .

ANNUAL REVIEW OF MATERIALS SCIENCE, 1997, 27 :69-88

[8]

Guerassimova N.V., 2005, HASYLAB ANN REPORTS

[9] AN ODMR STUDY OF EXCITON TRAPPING IN Y2O3 AND SC2O3 [J].

HAYES, W ;

KANE, MJ ;

SALMINEN, O ;

KUZNETSOV, AI .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1984, 17 (14) :L383-L387

[10] MECHANISMS OF EXCITON TRAPPING IN OXIDES [J].

HAYES, W .

JOURNAL OF LUMINESCENCE, 1984, 31-2 (DEC) :99-101

← 1 2 →