The nonradiative transition premiums Keep to the system WNR = W (0) exp(-alphap), the place p is the quantity of phonons matching the energy hole. The nonradiative changeover fees of Er3+ exhibit temperature dependence in line with the multiphonon relaxation principle. In Tm3+ the temperature dependence of nonradiative peace charges https://er-yb-yab-crystal38516.aioblogs.com/86286732/little-known-facts-about-er-yb-yab-crystal