Growth and Properties Study of LaBr3∶Ce,Sr Scintillation Crystal

Abstract

Abstract: In this paper, ϕ25 mm lanthanum bromide scintillation crystals with 5%Ce³⁺ and different Sr²⁺ doping concentrations (0.1%, 0.3%, 0.5% in molar ratio) were successfully grown by spontaneous nucleation vertical Bridgman method. X-ray excited emission spectra, transmission spectra and pulse height spectra of these crystals were measured. Results show that, the emission spectra waveform of LaBr₃∶Ce crystals with different Sr²⁺ doping concentrations is basically consistent under X-ray excitation, and the emission peak shows a significant red shift compared with that of sample without Sr²⁺ doping. With the increase of Sr²⁺doping concentration, the emission peak of LaBr₃∶Ce,Sr crystal shows a slight red shift. There is no obvious absorption peak range from 350 to 800 nm of LaBr₃∶Ce,Sr crystals with different Sr²⁺ doping concentrations. Compared with LaBr₃∶Ce crystals, transmittance of 0.3% and 0.5% Sr²⁺doped LaBr₃∶Ce crystals decrease. In addition, with the increase of Sr²⁺doping concentration, the energy resolution of the crystal increases correspondingly. LaBr₃∶Ce,0.5%Sr crystal has the highest energy resolution of 2.99%@662 keV. The energy resolution of the encapsulated LaBr₃∶Ce,0.5%Sr crystal with size of ϕ25 mm×25 mm is 2.93%@662 keV.

Key words: scintillation crystal, LaBr₃∶Ce,Sr, vertical Bridgman method, X-ray excited emission spectra, energy resolution, encapsulation

CLC Number:

WANG Haili, ZHOU Nanhao, XU Wanfen, ZHANG Wei, LI Huanying, HAN Jiahong, CHEN Jianrong. Growth and Properties Study of LaBr₃∶Ce,Sr Scintillation Crystal[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2023, 52(12): 2161-2166.

References

[1] VAN LOEF E V D, DORENBOS P, VAN EIJK C W E, et al. High-energy-resolution scintillator: Ce³⁺ activated LaBr₃[J]. Applied Physics Letters, 2001, 79(10): 1573-1575.
[2] CHEN H B, ZHOU C Y, YANG P Z, et al. Growth of LaBr₃∶Ce³⁺single crystal by vertical Bridgman process in nonvacuum atmosphere[J]. Journal of Material Science Technology, 2009, 25(6): 753-757.
[3] 史宏声, 秦来顺, 魏钦华, 等. 自发成核Bridgman法生长LaBr₃∶Ce晶体[J]. 人工晶体学报, 2010, 39(S1): 231-233.
SHI H S, QIN L S, WEI Q H, et al. Growth of LaBr₃∶Ce crystal by spontaneous nucleation Bridgman method[J]. Journal of Synthetic Crystals, 2010, 39(S1): 231-233 (in Chinese).
[4] 桂强, 张春生, 张明荣, 等. 大尺寸掺氯化铈的溴化镧晶体生长及闪烁性能研究[J]. 核电子学与探测技术, 2011, 31(11): 1195-1197+1249.
GUI Q, ZHANG C S, ZHANG M R, et al. Study on crystal growth and scintillation properties of large-size CeCl₃ doped LaBr₃ crystal[J]. Nuclear Electronics & Detection Technology, 2011, 31(11): 1195-1197+1249 (in Chinese).
[5] 丁言国, 包汉波, 李正国, 等. LaBr₃∶Ce晶体生长及物理特性的研究[J]. 硅酸盐通报, 2014, 33(3): 476-481.
DING Y G, BAO H B, LI Z G, et al. Study on growth and physical properties of LaBr₃∶Ce crystal[J]. Bulletin of the Chinese Ceramic Society, 2014, 33(3): 476-481 (in Chinese).
[6] 王海丽, 陈建荣, 李辉, 等. LaBr₃∶ Ce闪烁晶体的生长及性能研究[J]. 人工晶体学报, 2018, 47(6): 1192-1196.
WANG H L, CHEN J R, LI H, et al. Growth and properties study of LaBr₃∶Ce scintillation crystal[J]. Journal of Synthetic Crystals, 2018, 47(6): 1192-1196 (in Chinese).
[7] YANG K, MENGE P R, BUZNIAK J J, et al. Performance improvement of large Sr²⁺ and Ba²⁺ co-doped LaBr₃∶ Ce³⁺ scintillation crystals[C]//2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC). October 27-November 3, 2012, Anaheim, CA, USA. IEEE, 2013: 308-311.
[8] ALEKHIN M S, DE HAAS J T M, KHODYUK I V, et al. Improvement of γ-ray energy resolution of LaBr₃∶ Ce³⁺ scintillation detectors by Sr²⁺ and Ca²⁺ co-doping[J]. Applied Physics Letters, 2013, 102(16): 161915.
[9] ALEKHIN M S, BINER D A, KRÄMER K W, et al. Improvement of LaBr₃∶5%Ce scintillation properties by Li⁺, Na⁺, Mg²⁺, Ca²⁺, Sr²⁺, and Ba²⁺ co-doping[J]. Journal of Applied Physics, 2013, 113(22): 224904.
[10] 罗亮, 王承二, 余金秋. 掺Sr²⁺溴化铈晶体的生长与闪烁性能研究[J]. 人工晶体学报, 2022, 51(8): 1337-1342.
LUO L, WANG C E, YU J Q. Growth and scintillation properties of Sr²⁺ doped CeBr₃ crystal[J]. Journal of Synthetic Crystals, 2022, 51(8): 1337-1342 (in Chinese).
[11] ÅBERG D, SADIGH B, SCHLEIFE A, et al. Origin of resolution enhancement by co-doping of scintillators: insight from electronic structure calculations[J]. Applied Physics Letters, 2014, 104(21): 211908.

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Growth and Properties Study of LaBr₃∶Ce,Sr Scintillation Crystal

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