The nonradiative transition premiums Keep to the system WNR = W (0) exp(-alphap), the place p is the volume of phonons matching the Vitality gap. The nonradiative transition rates of Er3+ show temperature dependence per the multiphonon relaxation idea. In Tm3+ the temperature dependence of nonradiative rest fees is complex https://jasperczsoj.blog-mall.com/33703608/the-2-minute-rule-for-er-yb-yab-crystal