Determination of the 151Sm half-life
-
Marie-Martine Bé
,
Hélène Isnard
Abstract
New measurements have been undertaken to determine the half-life of 151Sm. A pure 151Sm solution was obtained after chemical separation from a samarium solution resulting from the dissolution of an irradiated samarium sample. The concentration of 151Sm in the solution was measured by mass spectrometry, combined with the isotope dilution technique. The activity of the solution was measured by liquid scintillation counting by six European laboratories as part of an international comparison. These combined results lead to a half-life of T1/2 = 94.6(6) a.
Acknowledgement
The authors would like to thank the BIPM staff for supporting the activity comparison.
This research was performed within a project which was financially supported by the European Commission in the framework of the European Metrology Research Programme EMRP (www.emrponline.eu) undertaken by several EU Member States under the Article 185 initiative. The contract identifier of the joint research project is EMRP ENV09 MetroRWM.
©2015 Walter de Gruyter Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Ground-state and isomeric-state cross sections for the 138Ce(n,2n)137Ce reaction from its threshold to 20 MeV
- Determination of the 151Sm half-life
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Artikel in diesem Heft
- Frontmatter
- Ground-state and isomeric-state cross sections for the 138Ce(n,2n)137Ce reaction from its threshold to 20 MeV
- Determination of the 151Sm half-life
- Kinetics of reductive stripping of Np(VI) by acetohydroxamic acid from 30%TBP/kerosene to nitrate medium using a high-speed stirred cell
- Characteristic and mechanism of Th4+ sorption from nitric acid solutions by rice and wheat bran
- Kinetics of ion flotation of Co(II)–EDTA complexes from aqueous solutions
- Preparation and biodistribution assessment of 111In-BPAMD as a novel agent for bone SPECT imaging
- Iodine-125 Chitosan-Vitamin C Complex: preparation, characterization and application
- Neutron activation analysis of polyethylene from neutron shield of EDELWEISS experiment
