The nonradiative changeover charges Keep to the formulation WNR = W (0) exp(-alphap), exactly where p is the volume of phonons matching the energy hole. The nonradiative transition costs of Er3+ show temperature dependence in line with the multiphonon leisure theory. In Tm3+ the temperature dependence of nonradiative leisure rates https://er-yb-yab-crystal30517.blogoscience.com/39407893/getting-my-er-yb-yab-crystal-to-work