The nonradiative transition costs Keep to the formula WNR = W (0) exp(-alphap), wherever p is the number of phonons matching the Electricity gap. The nonradiative transition premiums of Er3+ show temperature dependence in step with the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative leisure fees is https://erybyabcrystal95173.aioblogs.com/86364881/er-yb-yab-crystal-an-overview