The nonradiative transition charges follow the formula WNR = W (0) exp(-alphap), in which p is the number of phonons matching the Electricity hole. The nonradiative changeover charges of Er3+ exhibit temperature dependence consistent with the multiphonon relaxation concept. In Tm3+ the temperature dependence of nonradiative rest premiums is difficult https://er-yb-yab-crystal74283.idblogz.com/35292852/er-yb-yab-crystal-options