Crystal growth and scintillation properties of Tm:K2NaLuF6

被引：13

作者：

Abe, Naoto ^{[1
]}

Yanagidaa, Takayuki ^{[1
]}

Yokotaa, Yuui ^{[1
]}

Maeo, Shuji ^{[1
]}

Pejchal, Jan ^{[1
,2
]}

Fujimoto, Yutaka ^{[1
]}

Furuya, Yuuki ^{[1
]}

Tanaka, Hidehiko ^{[1
]}

Kawaguchi, Noriaki ^{[3
]}

Fukuda, Kentaro ^{[3
]}

Chani, Valery ^{[1
]}

Kamada, Kei ^{[1
,4
]}

Nikl, Martin ^{[2
]}

Yoshikawa, Akira ^{[1
,5
]}

机构：

[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] AS CR, Inst Phys, VVI, Prague 16253, Czech Republic

[3] Tokuyama Corp, Shibuya Ku, Tokyo 1508383, Japan

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

[5] Tohoku Univ, New Ind Creat Hatchery Ctr NICHe, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

OPTICAL MATERIALS | 2010年 / 32卷 / 05期

关键词：

Fluoride; Single crystal; Crystal growth from the melt; Tm3+ radiation; Scintillator; PULLING-DOWN METHOD; CROSS-LUMINESCENCE; VUV; TRANSITIONS; ND3+; IONS; CE;

D O I：

10.1016/j.optmat.2009.12.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Chemically stable and transparent K2NaLuF6 single crystals doped with Tm3+ ions were grown by the micro-pulling down method (mu-PD). X-ray diffraction measurements showed that the as-grown crystals possess cubic structure with Fm3m space group. The radio- and photo-luminescence spectra of the grown crystals were measured in the vacuum ultraviolet (VUV) and ultraviolet (UV) regions. Tm:K2NaLuF6 showed high emission intensity at 188 nm in the radio- and photo-luminescence spectra (lambda(exc) = 159 nm). The decay time and light yield of Tm:K2NaLuF6 were also investigated by Am-241 5.5 MeV alpha-ray irradiation. The main component of the decay time was a 4-8 mu s and this emission was considered as 5d-4f emission from 4f(n - 1)5d high-spin state (parity allowed and spin forbidden transition). In addition to this, the light yield of Tm-doped K2NaLuF6 single crystals systematically increased with increasing Tm concentration. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：589 / 594

页数：6

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