The nonradiative transition fees Adhere to the formula WNR = W (0) exp(-alphap), where p is the volume of phonons matching the Power gap. The nonradiative changeover fees of Er3+ show temperature dependence per the multiphonon relaxation concept. In Tm3+ the temperature dependence of nonradiative rest charges is complicated via https://erybyabcrystal06284.ampblogs.com/er-yb-yab-crystal-for-dummies-69805953