Phys. Rev. C 57, 2010–2016 (1998)Half-life of 44TiReceived 20 October 1997; published in the issue dated April 1998 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±1.0yr. 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±5yr. From these two results, we have obtained a best value of 62±2yr for the half-life of 44Ti. The astrophysical implications of this result are discussed. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.57.2010
DOI:
10.1103/PhysRevC.57.2010
PACS:
21.10.Tg, 98.70.Rz, 27.40.+z, 23.40.-s
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