The nonradiative transition charges follow the system WNR = W (0) exp(-alphap), wherever p is the amount of phonons matching the Electrical power gap. The nonradiative transition costs of Er3+ show temperature dependence according to the multiphonon relaxation theory. In Tm3+ the temperature dependence of nonradiative peace costs is sophisticated https://er-yb-yab-crystal41628.blog2freedom.com/33282254/what-does-er-yb-yab-crystal-mean