Physics – Nuclear Physics
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998phrvc..57.2010n&link_type=abstract
Physical Review C (Nuclear Physics), Volume 57, Issue 4, April 1998, pp.2010-2016
Physics
Nuclear Physics
34
Lifetimes, Gamma-Ray Sources, Gamma-Ray Bursts, 39<=A<=58, Beta Decay, Double Beta Decay, Electron And Muon Capture
Scientific paper
We present the results of two separate measurements of the half-life of 44Ti relative to those of 22Na and 207Bi, respectively. By comparing the numbers of 1157-keV γ rays from 44Ti to those of 1274-keV γ rays from 22Na observed from a mixed source over a period of approximately 2 yr, we determined the half-life of 44Ti to be 61.5+/-1.0 yr. From an approximately 1-yr-long study of another mixed source, where we compared the numbers of 1157-keV γ rays from 44Ti to those of 1064-keV γ rays from 207Bi, we determined the 44Ti half-life to be 62+/-5 yr. From these two results, we have obtained a best value of 62+/-2 yr for the half-life of 44Ti. The astrophysical implications of this result are discussed.
Browne Edgardo
Chan Yuen-Dat
Goldman Daniel I.
Larimer Ruth-Mary
Lesko Kevin T.
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