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S. K. Aggarwal

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

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

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.

Radiochimica Acta, Oldenbourg Wissenschaftsverlag

Print ISSN: 0033-8230
Volume: 94, 08/2006
Pages: 397 - 401

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