The conditions are discussed under which quantitative results can be obtained on fluorescent yields in solutions of rare earth ions, and Eu3+in particular. It is shown that fluorescent quantum yields may depend on the wavelength of excitation. © 1974.
Stein, G., & Würzberg, E. (1974). The dependence of fluorescence quantum yields on the exciting wavelength in solutions of rare earth ions. Chemical Physics Letters, 29(1), 21–22. https://doi.org/10.1016/0009-2614(74)80126-0