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Absorption, excitation, and emission spectra of europium have been measured in metaphosphate glasses, The oscillator strengths of the transitions of the 7Fo and 'F1 levels are calculated and compared with the values for aqueous solutions. The intensities and half-bandwidths of fluorescence from the SDo levels are compared with those of silicate glasses and aqueous solutions. The influence of the crystal fields of the glass 013 the hypersensitive AJ = 2 transition is discussed. The point symmetry of Eu in phosphate glass was found to be C,. The broadening of the spectral lines in glasses and aqueous solutions has been attributed to a multiplicity of sites with the same symmetry and various crystal field parameters.

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