The nonradiative transition charges follow the method WNR = W (0) exp(-alphap), wherever p is the amount of phonons matching the Electrical power gap. The nonradiative changeover rates of Er3+ exhibit temperature dependence consistent with the multiphonon rest principle. In Tm3+ the temperature dependence of nonradiative peace charges is sophisticated https://cristianonkkh.life3dblog.com/32260752/details-fiction-and-er-yb-yab-crystal