Tungsten gallium-phosphate glasses as promising intrinsic scintillators

被引：4

作者：

Lodi, Thiago A. ^{[1
]}

Galleani, Gustavo ^{[1
]}

Merizio, Leonnam G. ^{[1
]}

Jacobsohn, Luiz G. ^{[2
]}

Mastelaro, Valmor R. ^{[1
]}

de Camargo, Andrea S. ^{[1
]}

机构：

[1] Univ Sao Paulo, Sao Carlos Inst Phys, BR-13566590 Sao Carlos, SP, Brazil

[2] Clemson Univ, Dept Mat Sci & Engn, Clemson, SC 29634 USA

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2023年 / 603卷

基金：

巴西圣保罗研究基金会; 美国国家科学基金会;

关键词：

Tungsten gallium-phosphate glass; Intrinsic scintillator; Radioluminescence; BLUE LUMINESCENCE; CAWO4; FILMS; WO3;

D O I：

10.1016/j.jnoncrysol.2022.122097

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：

Tungsten gallium-phosphate glasses with composition NaPO3-20Ga(2)O(3)-xNa(2)WO(4) (x = 0, 1, 3, 5 and 10% mol) were synthesized by the melt-quenching technique with high chemical stability and excellent optical properties, and evaluated as potential intrinsic glass scintillators. Fourier-transform infrared measurements showed a decrease in the amount of OH- groups for increasing Na2WO4 contents, while X-ray photoelectron spectroscopy revealed the presence of sole W6+ species. Optical transmission measurements showed a high level of transmittance (similar to 90%) over a broad spectral range (400 to 2500 nm). Luminescence was found to correspond to a broad emission characteristic of the WO42- complex that can be excited by ultraviolet and X-rays with average lifetimes ranging from 32 to 20 mu s. At cryogenic temperatures, the NaPGaW glasses showed a significant increase in the luminescence emission.

引用

页数：7

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