The nonradiative transition prices follow the components WNR = W (0) exp(-alphap), the place p is the volume of phonons matching the Strength hole. The nonradiative changeover prices of Er3+ show temperature dependence consistent with the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative peace prices is challenging https://dantectiuh.is-blog.com/41351688/little-known-facts-about-er-yb-yab-crystal