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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]
  1. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
Publication Date:
OSTI Identifier:
20864245
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
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); Journal ID: ISSN 0556-2813
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. https://doi.org/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. 2006. "Improved measurement of the {sup 44}Ti half-life from a 14-year long study". United States. https://doi.org/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},
url = {https://www.osti.gov/biblio/20864245}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
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}
}