SOLUTE DISTRIBUTION IN CaF2 CRYSTALS DOPED WITH Pb2+ IONS
Pages 144-148
Carmen Stelian, Dana Susan - Resiga, Irina Nicoara, Liliana Lighezan
Abstract
In this paper, the solute axial distribution in CaF2 : Pb2+ crystals has been experimentally and numerically established, for the 1% - Pb2+ doped crystal. It has also been found that the absorption coefficient depends on the Pb2+ concentration and this dependence is nearly linear at lower values of the solute concentration (1-3%). An approximate estimation of the segregation and diffusion coefficients has been made. The numerical results are in a quite good agreement with the experimental ones. The longitudinal distribution of the Pb2+ solute measured along the crystal shows some oscillations, like in the case of the semiconductors.