Precise and accurate determination of alpha decay half-life of 244Pu by relative activity method using thermal ionization mass spectrometry and alpha spectrometry

S. K. Aggarwal

doi:10.1524/ract.2006.94.8.397

Published by De Gruyter (O) September 25, 2009

Precise and accurate determination of alpha decay half-life of ²⁴⁴Pu by relative activity method using thermal ionization mass spectrometry and alpha spectrometry

S. K. Aggarwal

From the journal Radiochimica Acta

https://doi.org/10.1524/ract.2006.94.8.397

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Summary

Alpha decay half-life of ²⁴⁴Pu has been re-determined using thermal ionization mass spectrometry for atom ratios measurements and alpha spectrometry for alpha activity ratios measurements. Two different samples of enriched ²⁴⁴Pu were used and the ²⁴⁴Pu half-life was determined using ²⁴⁰Pu and ²⁴²Pu isotopes as reference nuclides in the relative activity method. A value of (8.12 ± 0.03) × 10⁷ yr is recommended for the half-life of ²⁴⁴Pu based on the present data. This value is of high precision and accuracy compared to the two data reported in 1966 and 1969 with significantly larger uncertainties.

Keywords: 244Pu half-life; Alpha spectrometry; Thermal ionization mass spectrometry; Relative activity method

Received: 2006-1-6

Accepted: 2006-4-24

Published Online: 2009-9-25

Published in Print: 2006-8-1

Precise and accurate determination of alpha decay half-life of ²⁴⁴Pu by relative activity method using thermal ionization mass spectrometry and alpha spectrometry

Summary

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