The nonradiative changeover costs Stick to the components WNR = W (0) exp(-alphap), where by p is the amount of phonons matching the Strength gap. The nonradiative transition charges of Er3+ show temperature dependence consistent with the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative leisure fees is https://er-yb-yab-crystal41851.yomoblog.com/41449034/er-yb-yab-crystal-an-overview