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《Chinese Journal of Luminescence》 2001-02
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Obtaining of J-O Parameters (Ω_2,Ω_4) from Emission Spectra of Eu~(3+)

CHEN Bao jiu 1, WANG Hai yu 1,2 , ′E Shu lin 1, HUANG Shi hua 1 (1 Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130021, China; Laboratory of Excited State Processes, Chinese Academy of  
The trivalent rare earth ions have partially filled 4 f\+N shell.In the free atomic states,4 f\+N electrons contributes to same parity.In the bounded state,static crystal field leads to the mixing of opposite parity configuration,accordingly electronic dipole transition between 4 f\+N configuration is allowed.Judd Ofelt obtained the relationship between crystal field and the transition intensity based on the configuration mixing theory,and built up a method for calculating the transition intensity parameters from the absorption spectra.But the use of J O theory is limited,because in a lot of conditions the measurement of absorption spectra is difficult. In this work,the absorption,excitation and emission spectra of Eu 3+ doped glasses,which contained PbF 2 and H\-3BO\-3,was measured.The refractive index of different glasses was calculated.The Ω 2 and Ω 4 parameters of Eu\+\{3+\} for optical transition were calculated,in terms of reduced matrix U (t) (λ=2,4,6) character for optical transitions.The dependence of the Ω 2 and the Ω 4 parameter on the content of H 3BO 3 was obtained and discussed.The purpose of this work is that,using the Eu\+\{3+\} as a probe to study the microenvironment in glasses.Lastly we attest to the possibility of this purpose in experiment.
【Fund】: “8 63”计划资助项目 ( 863 715 0 0 3 0 0 90 ) ;; “973”国家重点基础研究规划 稀土功能材料的基础研究 (G19980 613 0 9)资助项
【CateGory Index】: O482.31
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