Fluorescence spectra and life time of

ion in borosilicate glass medium are measured. Electronic transitions of

ion in borosilicate glass medium are found to come from

(J=0, 1, 2, 3, 4) transitions of SL coupling system in

electrons configuration. From the number of Stark sublevels in spetra, crystal field for

ion is also found to have the symmetric character of low symmetry order,

. The fraction and the number of components of life times were varied depending on the composition of

in borosilicate glasses, from which the binding condition between the

ion and anionic oxygen of borosilicate glass can be deduced. 씀 ܀㘲ㄮ㠹㬏A灰汩敳⁰桹獩捳