The nonradiative changeover premiums Stick to the method WNR = W (0) exp(-alphap), in which p is the volume of phonons matching the energy hole. The nonradiative changeover premiums of Er3+ show temperature dependence in keeping with the multiphonon leisure principle. In Tm3+ the temperature dependence of nonradiative relaxation premiums https://er-yb-yab-crystal41628.blog2freedom.com/33282254/what-does-er-yb-yab-crystal-mean