Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1832220 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2007 | 6 Pages |
Abstract
A re-determination of the half-life of the α-decay nuclide 243Am is reported using the relative activity method. Different synthetic mixtures were prepared by mixing solutions of isotopically pure 241Am and enriched 243Am isotopes, with 241Am/243Am α activity ratios in the range of 0.2–2. The 241Am/243Am atom ratios in these mixtures were determined by thermal ionization mass spectrometry and the α activity ratios were obtained by α spectrometry. A value of 17.022±0.027 was obtained for the half-life ratio of 243Am to that of 241Am. Using a value of 432.2±(0.15%) a for the 241Am half-life, a value of 7357±23 a (1σ) was obtained for the half-life of 243Am. This is the value with highest precision and accuracy reported so far.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
S.K. Aggarwal, D. Alamelu, P.M. Shah, N.N. Mirashi,