The nonradiative transition costs follow the system WNR = W (0) exp(-alphap), exactly where p is the volume of phonons matching the Vitality hole. The nonradiative transition charges of Er3+ show temperature dependence consistent with the multiphonon rest idea. In Tm3+ the temperature dependence of nonradiative peace rates is difficult https://rowanjhcba.frewwebs.com/33705173/not-known-factual-statements-about-er-yb-yab-crystal