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YTTERBIUM
Natural Abundance, Stable Isobars Yb168, 0.140%, Er168 Yb170, 3.03%, Er170 Yb171, 14.31%, Hf174 Yb172, 21.82%, Hf176 Yb173, 16.13%, aLu176 Yb174, 31.84% Yb176, 12.73% The only compound which has been used in the separation of ytterbium isotopes is anhydrous ytterbium trichloride. The average charge consists of 150 g YbCl3 in a style C-16 graphite charge bottle. The method of charge preparation and the recycle and recovery procedures developed for samarium is used for all rare earth elements with the exception of cerium. The rare earth techniques are described in detail only for samarium and cerium. aLu176, natural abundance 2.6%, is radioactive with a half-life of 4.6 × 1010 years. |
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