（Y，Ce，Sm）（Mg，Mn）B_5O_（10）中Sm^（3＋）的发光与Mn~

THE LUMINESCENCE OF Sm￣(3+)AND ENERGY TRANSFER FROM Mn￣(2+)TO Sm￣(3+)IN(Y,Ce,Sm)(Mg,Mn)B_5O_(10)

研究了（Ｙ，Ｃｅ，Ｓｍ）（Ｍｇ，Ｍｎ）Ｂ５Ｏ（１０）中Ｓｍ（３＋）和Ｍｎ（２＋）的发光性质，Ｍｎ（２＋）浓度对Ｓｍ（３＋）发射的影响．着重讨论了Ｍｎ（２＋）对Ｓｍ（３＋）发射的敏化作用及能量传递机理．

A study of the luminescence of Sin3+,Mn2+ in the sample of(Y,Ce,Sm)(Mg,Mn)B10,the influence of Mn2+concentration on the luminescence of Sm3+ions is presented.From our measuremented of luminescent and excitation spectra,it shows that there exists an energy transfer from Ce3+ to Sm3+,to Mn2+,from Mn2+ to Sm3+.additional exeitation peaks of Mn2+ are observed in the excitation spectrum of Sm3+in a sample which contains Mn2+and Sm3+,the energy transfer from the T1(4G)level of Mn2+to the G5/2 level of Sm3+.It is concluded that the multipolar interaction is the predominant mechanism and a phonon assisted process for energy transfer from Mn2+to Sm3+.