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DETERMINATION OF HALF LIFE PERIODS FOR Dy$sup 159$, Ho$sup 160$, Tm$sup 166$, AND Lu$sup 17$$sup 3$

E.P. Grigor'ev, Oleg V. Larionov, M.K. Nikitin, Sergey L. Sakharov, O.V. Sergeev

Abstract

Dy/sup 159/, Ho/sup 160/, Tm/sup 166/, and Lu/sup 173/ were prepared by tanta lum bombardment with 660-Mev protons followed by chemical and chromotographic separation. The mean half life for Dy/sup 159/ was 139 plus or minus 10 days; for Ho/sup 160/, 476 plus or minus 0.10 hr; for Tm/sup 7.74 plus or minus 0.08 hr; and for Lu/sup 173/, 450 plus or minus 30 days. (R.V.J.)

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Key concepts: Half-life, Physics, Radiochemistry, Analytical Chemistry (journal), Chemistry, Chromatography, Internal medicine, Medicine