The nonradiative transition charges Stick to the method WNR = W (0) exp(-alphap), exactly where p is the number of phonons matching the energy hole. The nonradiative changeover charges of Er3+ show temperature dependence consistent with the multiphonon leisure theory. In Tm3+ the temperature dependence of nonradiative peace premiums is https://erybyabcrystal93714.blogerus.com/55339710/er-yb-yab-crystal-an-overview