The nonradiative transition premiums Stick to the components WNR = W (0) exp(-alphap), in which p is the volume of phonons matching the Strength hole. The nonradiative transition premiums of Er3+ show temperature dependence in step with the multiphonon peace idea. In Tm3+ the temperature dependence of nonradiative rest costs https://erybyabcrystal09630.ampblogs.com/facts-about-er-yb-yab-crystal-revealed-69770589