The nonradiative transition premiums Adhere to the formulation WNR = W (0) exp(-alphap), where p is the volume of phonons matching the energy gap. The nonradiative changeover fees of Er3+ exhibit temperature dependence consistent with the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative relaxation premiums is sophisticated https://troylmlje.onzeblog.com/33143381/5-simple-statements-about-er-yb-yab-crystal-explained