Literature DB >> 12433081

Age determination of highly enriched uranium: separation and analysis of 231Pa.

A Morgenstern1, C Apostolidis, K Mayer.   

Abstract

An analytical procedure has been developed for the age determination of highly enriched uranium samples exploiting the mother/daughter pair 235U/231Pa. Protactinium is separated from bulk uranium through highly selective sorption to silica gel and is subsequently quantified using alpha-spectrometry. The method has been validated using uranium standard reference materials of known ages. It affords decontamination factors exceeding 2.5 x 10(7), overall recoveries in the range of 80-85%, and a combined uncertainty below 5%.

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Year:  2002        PMID： 12433081     DOI： 10.1021/ac0203948

Source DB:  PubMed          Journal:  Anal Chem        ISSN： 0003-2700            Impact factor:   6.986


  4 in total

1.  A simple-rapid method to separate uranium, thorium, and protactinium for U-series age-dating of materials.

Authors:  Andrew W Knight; Eric S Eitrheim; Andrew W Nelson; Steven Nelson; Michael K Schultz
Journal:  J Environ Radioact       Date:  2014-03-28       Impact factor: 2.674

2.  Preparation and calibration of a 231Pa reference material.

Authors:  Richard M Essex; Ross W Williams; Kerri C Treinen; Ronald Collé; Ryan Fitzgerald; Raphael Galea; John Keightley; Jerome LaRosa; Lizbeth Laureano-Pérez; Svetlana Nour; Leticia Pibida
Journal:  J Radioanal Nucl Chem       Date:  2019       Impact factor: 1.371

3.  Measurement of the 231Pa/235U ratio for the age determination of uranium materials.

Authors:  Zsolt Varga; Adrian Nicholl; Erich Hrnecek; Maria Wallenius; Klaus Mayer
Journal:  J Radioanal Nucl Chem       Date:  2018-11-11       Impact factor: 1.371

4.  IRMM-1000a and IRMM-1000b uranium reference materials certified for the production date. Part I: methodology, preparation and target characteristics.

Authors:  Zsolt Varga; Célia Venchiarutti; Adrian Nicholl; Judit Krajkó; Rožle Jakopič; Klaus Mayer; Stephan Richter; Yetunde Aregbe
Journal:  J Radioanal Nucl Chem       Date:  2015-06-20       Impact factor: 1.371
  4 in total

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