The nonradiative transition charges follow the system WNR = W (0) exp(-alphap), exactly where p is the volume of phonons matching the Vitality hole. The nonradiative transition costs of Er3+ show temperature dependence in step with the multiphonon peace theory. In Tm3+ the temperature dependence of nonradiative rest premiums is https://tysonuvtqm.blogmazing.com/32334891/little-known-facts-about-er-yb-yab-crystal