The nonradiative changeover prices Keep to the components WNR = W (0) exp(-alphap), exactly where p is the amount of phonons matching the Strength gap. The nonradiative changeover charges of Er3+ show temperature dependence consistent with the multiphonon relaxation idea. In Tm3+ the temperature dependence of nonradiative relaxation premiums is https://er-yb-yab-crystal63062.onesmablog.com/the-best-side-of-er-yb-yab-crystal-73718063