The features of energy transfer to the emission centers in ZnWO4 and ZnWO4:Mo

被引：22
|
作者：
Krutyak, N. R. [1 ]
Mikhailin, V. V. [1 ,2 ]
Vasil'ev, A. N. [2 ]
Spassky, D. A. [2 ,3 ]
Tupitsyna, I. A. [4 ]
Dubovik, A. M. [4 ]
Galashov, E. N. [5 ]
Shlegel, V. N. [5 ]
Belsky, A. N. [6 ]
机构：
[1] Moscow MV Lomonosov State Univ, Fac Phys, Synchrotron Radiat Lab, Moscow 119991, Russia
[2] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia
[3] Univ Tartu, Inst Phys, EE-51014 Tartu, Estonia
[4] NAS Ukraine, Inst Scintillat Mat, UA-61001 Kharkov, Ukraine
[5] Nikolaev Inst Inorgan Chem SB RAS, Novosibirsk 630090, Russia
[6] Univ Lyon 1, CNRS, Inst Light & Matter, F-69622 Lyon, France
来源：
JOURNAL OF LUMINESCENCE | 2013年 / 144卷
关键词：
Zinc tungstate; Luminescence; Energy transfer; Cryogenic scintillator; Onsager sphere; ELECTRON-HOLE PAIRS; DOUBLE-BETA-DECAY; SINGLE-CRYSTALS; AB-INITIO; METAL TUNGSTATES; LUMINESCENCE; SCINTILLATION; ABSORPTION; SPECTROSCOPY; PERFORMANCE;
D O I：
10.1016/j.jlumin.2013.06.039
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The process of energy transfer to the emission centers is studied in ZnWO4 and ZnWO4:Mo single crystals in the temperature range 10-300 K. A numerical simulation describing the process is presented; the temperature dependence of energy transfer efficiency to the intrinsic emission centers in ZnWO4 is shown to be defined by the modification of Onsager sphere radius. A competitive role of radiative relaxation channel related to the impurity of molybdenum is studied in ZnWO4:Mo. It is shown that below 60 K the energy transfer to the MoO5 emission centers by free charge carriers terminates due to the self-trapping of holes at WO6 complexes. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：105 / 111
页数：7
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