The nonradiative transition charges follow the method WNR = W (0) exp(-alphap), where p is the number of phonons matching the Electricity gap. The nonradiative transition fees of Er3+ exhibit temperature dependence in keeping with the multiphonon relaxation concept. In Tm3+ the temperature dependence of nonradiative peace rates is challenging https://damiennngas.amoblog.com/facts-about-er-yb-yab-crystal-revealed-55012553