The nonradiative transition premiums follow the system WNR = W (0) exp(-alphap), in which p is the volume of phonons matching the Vitality hole. The nonradiative changeover charges of Er3+ show temperature dependence in step with the multiphonon peace principle. In Tm3+ the temperature dependence of nonradiative peace prices is https://erybyabcrystal85172.blogripley.com/33779921/er-yb-yab-crystal-an-overview