The nonradiative transition premiums Stick to the components WNR = W (0) exp(-alphap), the place p is the volume of phonons matching the Strength hole. The nonradiative changeover premiums of Er3+ show temperature dependence per the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative rest fees is complex https://hectorzbzyu.dbblog.net/6498414/5-easy-facts-about-er-yb-yab-crystal-described