The nonradiative transition premiums follow the system WNR = W (0) exp(-alphap), where p is the quantity of phonons matching the energy hole. The nonradiative transition rates of Er3+ exhibit temperature dependence in line with the multiphonon relaxation principle. In Tm3+ the temperature dependence of nonradiative leisure premiums is complicated https://pauly691ddf5.wikifrontier.com/user