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Precise and accurate determination of alpha decay half-life of 244Pu by relative activity method using thermal ionization mass spectrometry and alpha spectrometry
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S. K. Aggarwal
Published/Copyright:
September 25, 2009
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
© Oldenbourg Wissenschaftsverlag
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Keywords for this article
244Pu half-life;
Alpha spectrometry;
Thermal ionization mass spectrometry;
Relative activity method
Articles in the same Issue
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