铈激活钇铝石榴石(Ce3+∶YAG)单晶是综合性能优良的快衰减闪烁材料.本文以普通光源、激光、同步辐射以及阴极射线为激发源,对我们生长的Ce3+∶YAG闪烁晶体的激发和发光特性进行了系统的研究.结果表明:Ce3+∶YAG单晶的激发光谱(监测荧光波长为545nm)由五个激发峰组成.不同激发条件下的发射光谱均能用双高斯峰进行较好的拟合,拟合后得到的Ce3+的5d→2F5/2和5d→2F7/2发光带的中心波长分别约为520nm和570nm.但是,不同条件激发下5d→2F5/2和5d→2F7/2发光带的强度比有较大差异,这可能与不同的激发机制和激发能传输途径有关.
参考文献
| [1] | Moszynski M;Ludziejewski T;Wolski D et al.Properties of YAG:Ce Scintillator[J].Nuclear Instruments and Methods in Physics Research A:Accelerators,Spectrometers,Detectors and Associated Equipment,1994,345:461-467. |
| [2] | Ludziejewski T.;Kapusta M.;Wolski D.;Klamra W.;Moszynska K.;Moszynski M. .INVESTIGATION OF SOME SCINTILLATION PROPERTIES OF YAG-CE CRYSTALS[J].Nuclear Instruments and Methods in Physics Research, Section A. Accelerators, Spectrometers, Detectors and Associated Equipment,1997(2/3):287-294. |
| [3] | Zych E;Brecher C;Lingertat H.Scintillation Properties of YAG:Ce Optical Ceramics[A].,1997:257-260. |
| [4] | Yun Chan Kang;I. Wuled Lenggoro;Seung Bin Park;Kikuo Okuyama .YAG:Ce phosphor particles prepared by ultrasonic spray pyrolysis[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2000(5):789-798. |
| [5] | 黄朝红,陆磊,周东方,秦青海,李运奎,殷绍唐,施朝淑.大尺寸无机闪烁晶体Ce3+：YAG的生长和光谱研究[J].人工晶体学报,2001(04):354-357. |
| [6] | Wong C M;Rotman S R;Warde C .Optical Studies of Cerium Doped Yttrium Aluminum Garnet Single Crystals[J].Applied Physics Letters,1984,44(11):1038-1040. |
| [7] | Tomiki T;Akamine H;Gushiken M et al.Ce3+ Center in Y3Al5O12(YAG) Single Crystals[J].Journal of the Physical Society of Japan,1991,60(07):2437-2445. |
| [8] | Blasse G;Bril A .Investigation of Some Ce3+-activated Phosphors[J].Journal of Chemical Physics,1967,47(12):5139-5145. |
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