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Half-life and specific activity of 99Tc
Affiliation:1. Instituto de Física, Universidade Federal da Bahia, Campus Ondina, 40210-340 Salvador, Bahia, Brazil;2. Instituto Federal do Sertão Pernambucano, Campus Petrolina, 56314-520 Petrolina, Pernambuco, Brazil;3. Instituto de Física, Universidade de Brasília, 70910-900 Brasília, DF, Brazil;1. MST-7, Los Alamos National Laboratory, Los Alamos, NM 87545, United States;2. MST-16, Los Alamos National Laboratory, Los Alamos, NM 87545, United States;3. C-PCS, Los Alamos National Laboratory, Los Alamos, NM 87545, United States;1. Reactor Physics Department, Jozef Stefan Institute, Jamova cesta 39, Ljubljana SI-1000, Slovenia;2. Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831, USA;1. CEA, DEN, DEC, F-13108, Saint Paul lez Durance Cedex, France;2. Aix-Marseille Université, CNRS, Centrale Marseille, FSCM, CP2M, Marseille, France;3. Aix Marseille Univ, Université de Toulon, CNRS, IM2NP, Marseille, France
Abstract:The half-life and specific activity of 99Tc were redetermined by measuring the activity of a known weight (determined coulometrically) of 99Tc by a liquid scintillation method and found to be 2·14(±0.·05) × 105 years and 3·75(±0·11) × 104 disintegration/min per μg respectively. These results are in excellent agreement with previous values.
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