The nonradiative changeover costs Keep to the method WNR = W (0) exp(-alphap), wherever p is the amount of phonons matching the Power gap. The nonradiative transition fees of Er3+ show temperature dependence in step with the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative leisure charges is https://beauehgda.snack-blog.com/33087319/5-simple-statements-about-er-yb-yab-crystal-explained