The nonradiative changeover charges Keep to the components WNR = W (0) exp(-alphap), where by p is the volume of phonons matching the energy hole. The nonradiative changeover charges of Er3+ exhibit temperature dependence in step with the multiphonon relaxation principle. In Tm3+ the temperature dependence of nonradiative relaxation premiums https://robertp258acc4.eqnextwiki.com/user