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Title: Improved measurement of the {sup 44}Ti half-life from a 14-year long study

Abstract

The half-life of {sup 44}Ti was determined by following the decay of {sup 44}Ti and {sup 60}Co for 14 yr. Mixed sources containing {sup 44}Ti and {sup 60}Co and pure sources of {sup 44}Ti and {sup 60}Co were prepared and their {gamma}-ray spectra were measured with a Ge spectrometer once or twice a year. Counts in the 1157.0-keV {gamma}-ray photopeak of {sup 44}Ti and the 1173.2- and 1332.5-keV {gamma}-ray photopeaks of {sup 60}Co were used for this measurement. From the decay of the {sup 44}Ti and {sup 60}Co activity ratios, the half-life of {sup 44}Ti was determined. Using a value of 5.2711{+-}0.0004 yr for {sup 60}Co half-life, we determined the half-life of {sup 44}Ti as 58.9{+-}0.3 yr. Special efforts were made to check for systematic errors and these were found to be negligible within the quoted uncertainty.

Authors:
; ; ; ; ; ;  [1];  [2];  [3]
  1. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  2. (Israel)
  3. (VERA), Institut fuer Isotopenforschung und Kernphysik, Universitaet Wien, Waehringer Strasse 17, A-1090 Vienna (Austria)
Publication Date:
OSTI Identifier:
20864245
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 74; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.74.065803; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; COBALT 60; ELECTRON CAPTURE; ENERGY LEVELS; ERRORS; GAMMA RADIATION; GAMMA SPECTRA; GAMMA SPECTROSCOPY; HALF-LIFE; KEV RANGE; LIFETIME; NUCLEAR DECAY; TITANIUM 44

Citation Formats

Ahmad, I., Greene, J. P., Moore, E. F., Ghelberg, S., Ofan, A., Paul, M., Kutschera, W., Racah Institute of Physics, Hebrew University, Jerusalem, 91904, and Vienna Environmental Research Accelerator. Improved measurement of the {sup 44}Ti half-life from a 14-year long study. United States: N. p., 2006. Web. doi:10.1103/PHYSREVC.74.065803.
Ahmad, I., Greene, J. P., Moore, E. F., Ghelberg, S., Ofan, A., Paul, M., Kutschera, W., Racah Institute of Physics, Hebrew University, Jerusalem, 91904, & Vienna Environmental Research Accelerator. Improved measurement of the {sup 44}Ti half-life from a 14-year long study. United States. doi:10.1103/PHYSREVC.74.065803.
Ahmad, I., Greene, J. P., Moore, E. F., Ghelberg, S., Ofan, A., Paul, M., Kutschera, W., Racah Institute of Physics, Hebrew University, Jerusalem, 91904, and Vienna Environmental Research Accelerator. Fri . "Improved measurement of the {sup 44}Ti half-life from a 14-year long study". United States. doi:10.1103/PHYSREVC.74.065803.
@article{osti_20864245,
title = {Improved measurement of the {sup 44}Ti half-life from a 14-year long study},
author = {Ahmad, I. and Greene, J. P. and Moore, E. F. and Ghelberg, S. and Ofan, A. and Paul, M. and Kutschera, W. and Racah Institute of Physics, Hebrew University, Jerusalem, 91904 and Vienna Environmental Research Accelerator},
abstractNote = {The half-life of {sup 44}Ti was determined by following the decay of {sup 44}Ti and {sup 60}Co for 14 yr. Mixed sources containing {sup 44}Ti and {sup 60}Co and pure sources of {sup 44}Ti and {sup 60}Co were prepared and their {gamma}-ray spectra were measured with a Ge spectrometer once or twice a year. Counts in the 1157.0-keV {gamma}-ray photopeak of {sup 44}Ti and the 1173.2- and 1332.5-keV {gamma}-ray photopeaks of {sup 60}Co were used for this measurement. From the decay of the {sup 44}Ti and {sup 60}Co activity ratios, the half-life of {sup 44}Ti was determined. Using a value of 5.2711{+-}0.0004 yr for {sup 60}Co half-life, we determined the half-life of {sup 44}Ti as 58.9{+-}0.3 yr. Special efforts were made to check for systematic errors and these were found to be negligible within the quoted uncertainty.},
doi = {10.1103/PHYSREVC.74.065803},
journal = {Physical Review. C, Nuclear Physics},
number = 6,
volume = 74,
place = {United States},
year = {Fri Dec 15 00:00:00 EST 2006},
month = {Fri Dec 15 00:00:00 EST 2006}
}