The nonradiative transition costs Stick to the formulation WNR = W (0) exp(-alphap), where p is the amount of phonons matching the energy hole. The nonradiative changeover rates of Er3+ show temperature dependence in line with the multiphonon peace principle. In Tm3+ the temperature dependence of nonradiative relaxation charges is https://jasperxiheb.bloggactif.com/34334719/er-yb-yab-crystal-for-dummies