Radiation-Stimulated Transformations Yb-=SUP=-3+-=/SUP=-->Yb-=SUP=-2+-=/SUP=- and Yb-=SUP=-3+-=/SUP=-->Yb-=SUP=-3+-=/SUP=- in Single Crystals and Nanoceramics CaF-=SUB=-2-=/SUB=- : YbF-=SUB=-3-=/SUB=-
Ashurov M. Kh.И. НуритдиновInstitute of Nuclear Physics, Academy of Sciences of Uzbekistan, Ulugbek, Tashkent, 100214 UzbekistanSokhiba BoyboboevaInstitute of Nuclear Physics, Academy of Sciences of Uzbekistan, Ulugbek, Tashkent, 100214 Uzbekistan
ABI
Abstract
The radiation resistance of CaF 2 : YbF 3 (3 mol.% YbF 3 ) laser ceramics and a single crystal of similar composition (3.6 mol.% YbF 3 ) exposed to gamma rays in a 60 Co source is studied. The non-irradiated samples have been shown to be similar in spectral characteristics. After the CaF 2 : YbF 3 crystals and ceramics γ-irradiation and the following time exposure, along with transformations Yb 3+ ->Yb 2+ , configurational Yb 3+ ->Yb 3+ transitions between different states of Yb 3+ ions in the structure of samples are carried out, with the participation of interstitial F i ions. Keywords: radiation resistance, laser ceramics, gamma rays, spectral characteristics defects.
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