Subpicosecond luminescence rise time in magnesium codoped GAGG:Ce scintillator

被引：31

作者：

Tamulaitis, G. ^{[1
,2
]}

Vaitkevicius, A. ^{[1
,2
]}

Nargelas, S. ^{[1
,2
]}

Augulis, R. ^{[3
]}

Gulbinas, V. ^{[3
]}

Bohacek, P. ^{[4
]}

Nikl, M. ^{[4
]}

Borisevich, A. ^{[5
]}

Fedorov, A. ^{[5
]}

Korjik, M. ^{[5
]}

Auffray, E. ^{[6
]}

机构：

[1] Vilnius Univ, Inst Appl Res, Sauletekio Al 3, LT-10257 Vilnius, Lithuania

[2] Vilnius Univ, Semicond Phys Dept, Sauletekio Al 3, LT-10257 Vilnius, Lithuania

[3] Ctr Phys Sci & Technol, Sauletekio Al 3, LT-10257 Vilnius, Lithuania

[4] Inst Phys CAS, Cukrovarnicka 10, Prague, Czech Republic

[5] Res Inst Nucl Problems, Bobruiskaya Str 11, Minsk, BELARUS

[6] CERN, Geneva, Switzerland

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2017年 / 870卷

关键词：

Scintillator; GAGG garnet crystal; Luminescence kinetics; Radiation detector; SELF-ACTIVATED PBWO4; CE; PERFORMANCE; RESOLUTION; GROWTH; PS;

D O I：

10.1016/j.nima.2017.07.015

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The influence of co-doping of Gd(3)Al(2)GA(3)O(12): Ce (GAGG:Ce) scintillator with magnesium on the rise time of luminescence response was studied in two GAGG: Ce crystals grown in nominally identical conditions except of Mg co-doping in one of them. Time-resolved photoluminescence spectroscopy and free carrier absorption techniques were exploited. It is evidenced that the Mg co-doping decreases the rise time down to sub-picosecond domain. Meanwhile, the light yield decreases by similar to 20%. Thus, the feasibility of exploitation of the fast rise edge in luminescence response for ultrafast timing in scintillation detectors is demonstrated. The role of Mg impurities in facilitating the excitation transfer to radiative recombination centers is discussed. (C) 2017 The Authors. Published by Elsevier B.V.

引用

页码：25 / 29

页数：5

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