The nonradiative transition charges Stick to the system WNR = W (0) exp(-alphap), where by p is the number of phonons matching the Strength hole. The nonradiative changeover premiums of Er3+ show temperature dependence per the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative relaxation premiums is complex https://ambrosey603gji6.nico-wiki.com/user