抄録
The emission spectra of GdOCI:Eu have been measured at high pressures up to 10 GPa and at room temperature to examine the pressure effect on the energy levels of Eu3+ in the crystal. About 60 spectral lines have been measured at various pressures. These lines slowly shift to the red at rates 3-9 cm-1/GPa. On the basis of experimental data the pressure dependences of 24 Stark levels belonging to the 5D0-2 and 7F0-5 multiplets have been determined. By fitting experimental levels the crystal field parameters and free ion parameters have been found out. The crystal field strength parameter S, Slater integral F2 and spin-orbit coupling parameter ζ decrease with pressurization in some degree.
