The nonradiative transition rates Keep to the formula WNR = W (0) exp(-alphap), wherever p is the amount of phonons matching the energy gap. The nonradiative changeover rates of Er3+ exhibit temperature dependence according to the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative peace charges is sophisticated https://zionntvww.buyoutblog.com/34744672/details-fiction-and-er-yb-yab-crystal