Physics – Nuclear Physics
Scientific paper
Oct 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aps..dnp..cd01a&link_type=abstract
American Physical Society, Division of Nuclear Physics Meeting, October 5-8, 1997, abstract #CD.01
Physics
Nuclear Physics
Scientific paper
The half-life of ^44Ti, which is of interest in cosmology, has been measured by several groups of scientests over the past 30 years. These measurements give conflicting values which range from 49 to 66 years. For this reason a measurement of the ^44Ti half-life was undertaken at Argonne. The decay of mixed sources of ^44Ti and ^60Co has been followed at three institutions- Argonne, Jerusalem and Torino. Half-life values have been determined from the decay of ^44Ti gamma rays alone and also from the decay ^44Ti gamma rays relative to ^60Co whose life-time is very precisely known (5.2714± 0.0005 y). The gamma ray spectra of the samples were measured with Ge detectors at regular intervals for 5 years. The measurements are complete and the analysis is underway. The details of the measurements and the half-life values obtained from these measurements will be presented. This work was supported by the US Department of Energy, Nuclear Physics Division, under contract no. W-31-109-ENG-38.
Ahmad Ibrahim
Bonino Gianfranco
Castagnoli Cini G.
Fischer Susan M.
Kutschera Walter
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