The nonradiative transition charges Keep to the formulation WNR = W (0) exp(-alphap), where p is the volume of phonons matching the Strength gap. The nonradiative changeover premiums of Er3+ exhibit temperature dependence in step with the multiphonon leisure principle. In Tm3+ the temperature dependence of nonradiative relaxation charges is https://zbigniewx581fik7.wikimeglio.com/user