The nonradiative transition costs Keep to the formulation WNR = W (0) exp(-alphap), where p is the volume of phonons matching the Strength gap. The nonradiative transition fees of Er3+ show temperature dependence in keeping with the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative leisure rates is https://nicolausg703lno8.lotrlegendswiki.com/user