The nonradiative changeover fees Keep to the formulation WNR = W (0) exp(-alphap), where by p is the volume of phonons matching the Strength gap. The nonradiative transition premiums of Er3+ show temperature dependence per the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative peace premiums is complicated https://jaidenjlkhd.blogdal.com/33743934/5-easy-facts-about-er-yb-yab-crystal-described