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Reddish Orange Long-Lasting Phosphorescence in KY_(3)F_(10):Sm^(3+)for X-Ray or Cathode Ray Tubes

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摘要 We report a reddish orange long-lasting phosphor of KY_(3)F_(10):Sm^(3+)synthesized by a solid-state reaction for applications in x-ray or cathode-ray tubes.The spectrum contains a group of reddish orange emission lines originating from^(4)G_(5/2)→^(6)H_(J)transitions of Sm^(3+).The Judd-Ofelt theory is introduced to analyze the optical transitions of the Sm^(3+)ions.Moreover,phosphorescence characteristics are discussed.The energy charging and release processes of the phosphor are measured and the phosphorescence decay time with 10%of initial intensity is about 40.7 seconds.The order of kinetics and the activation energy are obtained according to the thermoluminescence curve.The phosphorescence mechanism is proposed based on structural analysis and thermoluminescence glow curve measurement.
作者 ZHANG Jin-Su ZHONG Hai-Yang SUN Jia-Shi CHENG Li-Hong LI Xiang-Ping CHEN Bao-Jiu 张金苏;仲海洋;孙佳石;程丽红;李香萍;陈宝玖(Department of Physics,Dalian Maritime University,Dalian 116026)
机构地区 Department of Physics
出处 《Chinese Physics Letters》 SCIE CAS CSCD 2012年第1期209-212,共4页 中国物理快报(英文版)
基金 Supported by the National Natural Science Foundation of China under Grant Nos 11104024,50972021,61078061 and 11104023 the Natural Science Foundation of Liaoning Province(20092147) Foundation of Education Department of Liaoning Province under Grant No L2010056 Fundamental Research Funds for the Central/Kernel Universities under Grant Nos 2011JC037,2011JC036,2011ZD032 and 2011ZD033.
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