Three-Laboratory Measurement of the {sup 44}Ti Half-Life

Journal Article · Sun Mar 01 04:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.80.2550· OSTI ID:597233

Ahmad, I; Fischer, S M; Kutschera, W; Paul, M ^[1]; Bonino, G; Bonino, G; Castagnoli, G C; Castagnoli, G C ^[2]; Kutschera, W ^[3]; Paul, M ^[4]

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1. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. Dipartimento di Fisica Generale dell`Universita, Via P. Giuria 1, I-10125 Torino (Italy)
3. Institut fuer Radiumforschung und Kernphysik der Universitaet Wien, Boltzmanngasse 3, A-1090 Vienna (Austria)
4. Racah Institute of Physics, Hebrew University, Jerusalem, Israel 91904; University of Chicago, Chicago, Illinois 60637 (United States)

We report on a measurement of the {sup 44}Ti half-life aimed at lowering existing systematic uncertainties in this value, which is important to astrophysics. The half-life was measured by following the decay of {sup 44}Ti relative to {sup 60}Co for about 5yr and the measurements were performed independently in three laboratories{emdash}Argonne, Jerusalem, and Torino. We suggest to combine our result, 59.0{plus_minus}0.6yr, with the one from the accompanying Letter by G{umlt o}rres {ital et al.,} 60.3{plus_minus}1.3yr, to obtain a current {open_quotes}best value{close_quotes} for the half-life of {sup 44}Ti of 59.2{plus_minus}0.6 yr (1{sigma} error). {copyright} {ital 1998} {ital The American Physical Society}

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 597233
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 12 Vol. 80; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ASTROPHYSICS
COBALT 60
HALF-LIFE
NUCLEAR DECAY
SENSITIVITY
TITANIUM 44