The nonradiative changeover costs Keep to the components WNR = W (0) exp(-alphap), in which p is the amount of phonons matching the energy gap. The nonradiative changeover fees of Er3+ show temperature dependence consistent with the multiphonon rest concept. In Tm3+ the temperature dependence of nonradiative leisure prices is https://gunnerhhxch.blognody.com/37177769/considerations-to-know-about-er-yb-yab-crystal