The nonradiative transition charges Keep to the system WNR = W (0) exp(-alphap), where p is the number of phonons matching the Vitality gap. The nonradiative transition charges of Er3+ show temperature dependence in line with the multiphonon peace principle. In Tm3+ the temperature dependence of nonradiative rest charges is https://erybyabcrystal85173.thechapblog.com/32351143/er-yb-yab-crystal-an-overview