新型混合Lu/sub x/(RE/sup 3+/)/sub 1-x/AlO/sub 3/:Ce闪烁体(RE/sup 3+/=Y/sup 3+/或Gd/sup 3+/)与其他掺Ce或本征闪烁晶体的性能比较

1998 IEEE Nuclear Science Symposium Conference Record. 1998 IEEE Nuclear Science Symposium and Medical Imaging Conference (Cat. No.98CH36255) Pub Date : 1998-11-08 DOI:10.1109/NSSMIC.1998.775198

J. Mares, M. Nikl, J. Chval, E. Mihóková, J. Giba, K. Nejezchleb, D. Clement, J. Loude, C. Morel

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引用次数: 1

摘要

本文介绍了新型掺铈、快速高效的Lu/sub x/(RE/sup 3+/)/sub 1-x/AlO/sub 3/混合晶体的研制。用Czochralski法生长晶体，Y/sup +/离子的x=0.1、0.2和0.3,Gd/sup +/离子的x=0.6和0.7，获得了良好的结果。Lu/sub x/(RE/sup 3+/)/sub 1-x/AlO/sub 3/:Ce晶体的相对光产率比BGO晶体高40% ~ 75%，与YAP:Ce晶体的光产率相当。在662 keV下测量的能量分辨率范围在8%到15.3% fwhm之间，接近YAP:Ce晶体获得的能量分辨率。

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Properties of new mixed Lu/sub x/(RE/sup 3+/)/sub 1-x/AlO/sub 3/:Ce scintillators (RE/sup 3+/=Y/sup 3+/ or Gd/sup 3+/) compared with other Ce-doped or intrinsic scintillation crystals

This paper presents the development of new Ce-doped, fast and high effective-Z mixed Lu/sub x/(RE/sup 3+/)/sub 1-x/AlO/sub 3/ crystals. The crystals were grown by the Czochralski method and good results were obtained with x=0.1, 0.2 and 0.3 for Y/sup 3+/ ions and roughly between x=0.6 and 0.7 for Gd/sup 3+/ ions. Relative light yields measured for the Lu/sub x/(RE/sup 3+/)/sub 1-x/AlO/sub 3/:Ce crystals were 40% to 75% bigger than the BGO light yield and were comparable to the light yield of YAP:Ce. Measured energy resolutions at 662 keV ranged over 8% to 15.3% fwhm and were close to the energy resolution obtained with a YAP:Ce crystal.

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1998 IEEE Nuclear Science Symposium Conference Record. 1998 IEEE Nuclear Science Symposium and Medical Imaging Conference (Cat. No.98CH36255)

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