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Slow Scintillation Suppression in Yttrium Doped BaF_2 Crystals

Chen, Junfeng and Yang, Fan and Zhang, Liyuan and Zhu, Ren-Yuan and Du, Yong and Wang, Shaohua and Sun, Shiyun and Li, Xiang (2018) Slow Scintillation Suppression in Yttrium Doped BaF_2 Crystals. IEEE Transactions on Nuclear Science, 65 (8). pp. 2147-2151. ISSN 0018-9499. https://resolver.caltech.edu/CaltechAUTHORS:20180105-101227666

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Abstract

Barium fluoride (BaF_2) crystal has a fast scintillation light peaked at 195 and 220 nm with a sub-ns decay time. This ultrafast scintillation promises a wide application in an area where extreme fast timing is important, such as future high-energy physics experiments, gigahertz hard X-ray imaging, and time-of-flight positron emission tomography. BaF_2 crystal, however, has also a slow scintillation component peaked at 310 nm with a decay time of about 600 ns, which causes pileup. Suppression of the slow scintillation component by selective doping, such as Ce, La, Tm, and Y, was discussed 20 years ago. In this paper, we report suppression of the slow component in BaF_2 crystals by yttrium doping. Single crystals with 1 at% Y doping were grown by vacuum Bridgman technique at the Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China. Their radioluminescence, optical transmittance, light output, fast/slow ratio, decay kinetics, and light response uniformity were measured. The results show that 1 at% Y doping suppresses the slow scintillation component in BaF 2crystals by a factor of 6, while the fast component remains unaffected.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1109/TNS.2017.2786042DOIArticle
http://ieeexplore.ieee.org/document/8233169/PublisherArticle
ORCID:
AuthorORCID
Chen, Junfeng0000-0003-3863-3324
Zhang, Liyuan0000-0002-0898-787X
Zhu, Ren-Yuan0000-0003-3091-7461
Du, Yong0000-0002-7595-2853
Alternate Title:Slow Scintillation Suppression in Yttrium Doped BaF2 Crystals
Additional Information:© 2017 IEEE. Manuscript received October 15, 2017; revised December 10, 2017; accepted December 19, 2017. Date of publication December 21, 2017; date of current version August 15, 2018. This work was supported in part by the National Natural Science Funds of China under Grant 51402332 and in part by the U.S. Department of Energy, Office of High Energy Physics Program under Grant DE-SC0011925 and Grant DE-AC52-06NA25396. The authors would like to thank Y. Lu and W. Li at the Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China, for the assistance in preparing undoped and Y doped BaF_2 crystals.
Funders:
Funding AgencyGrant Number
National Natural Science Foundation of China51402332
Department of Energy (DOE)DE-SC0011925
Department of Energy (DOE)DE-AC52-06NA25396
Subject Keywords:Barium fluoride, Scintillation crystals, Slow component, Y^(3+) doping
Issue or Number:8
Record Number:CaltechAUTHORS:20180105-101227666
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180105-101227666
Official Citation:J. Chen et al., "Slow Scintillation Suppression in Yttrium Doped BaF2Crystals," in IEEE Transactions on Nuclear Science, vol. 65, no. 8, pp. 2147-2151, Aug. 2018. doi: 10.1109/TNS.2017.2786042
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84123
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:05 Jan 2018 18:28
Last Modified:09 Mar 2020 13:19

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