The nonradiative changeover fees Keep to the formulation WNR = W (0) exp(-alphap), where p is the quantity of phonons matching the energy gap. The nonradiative changeover prices of Er3+ show temperature dependence consistent with the multiphonon rest theory. In Tm3+ the temperature dependence of nonradiative leisure rates is challenging https://er-yb-yab-crystal62840.estate-blog.com/32318721/facts-about-er-yb-yab-crystal-revealed