The nonradiative transition prices follow the method WNR = W (0) exp(-alphap), in which p is the number of phonons matching the Electrical power gap. The nonradiative transition fees of Er3+ show temperature dependence per the multiphonon relaxation principle. In Tm3+ the temperature dependence of nonradiative peace charges is complicated https://agatham924kig5.illawiki.com/user