Crystal growth and scintillation properties of pure and Tl-doped Cs3Cu2I5

被引：56

作者：

Stand, Luis ^{[1
]}

Rutstrom, Daniel ^{[1
,2
]}

Koschan, Merry ^{[1
]}

Du, Mao-Hua ^{[3
]}

Melcher, Charles ^{[1
,2
]}

Shirwadkar, Urmila ^{[4
]}

Glodo, Jarek ^{[4
]}

Van Loef, Edgar ^{[4
]}

Shah, Kanai ^{[4
]}

Zhuravleva, Mariya ^{[1
,2
]}

机构：

[1] Univ Tennessee, Scinitillat Mat Res Ctr, Knoxville, TN USA

[2] Univ Tennessee, Dept Mat Sci, Knoxville, TN USA

[3] Oak Ridge Natl Lab, Mat Sci Div, Oak Ridge, TN USA

[4] Radiat Monitoring Devices, Watertown, MA USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2021年 / 991卷

关键词：

Bridgman technique; Single crystal growth; Scintillator; Halides; PHASE-DIAGRAM; HALIDE; EMISSION; YIELD; MODEL;

D O I：

10.1016/j.nima.2020.164963

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

In this work the Bridgman crystal growth and scintillation properties of both undoped and Tl-doped Cs3Cu2I5 are presented. This material is very attractive for gamma and X-ray detection applications, with a density of 4.53 g/cm(3) and effective atomic number of 51.9. Undoped Cs3Cu2I5 had a light yield of 41,500 photons/MeV, with an energy resolution of 4.4% at 662 keV. Thallium doping at 0.5 mol % resulted in a much-improved scintillation response, in which light yield increased to 98,200 photons/MeV and energy resolution reduced to 3.3% at 662 keV. The X-ray excited emission is centered at 442 nm for the undoped and 500 nm for the Tl-doped crystals. The undoped emission is broad, typical of excitonic emission, while thallium doping results in an even broader band with features of both the undoped and thallium defect-mediated emissions.

引用

页数：9

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