The half-life of62Cu
- 1 November 1997
- journal article
- Published by IOP Publishing in Journal of Physics G: Nuclear and Particle Physics
- Vol. 23 (11) , 1707-1714
- https://doi.org/10.1088/0954-3899/23/11/018
Abstract
The half-life of the positron emitter has been measured using liquid scintillation (LS) spectrometry and counting in the National Institute of Standards and Technology (NIST) `' - re-entrant ionization chamber (IC). A total of 12 independent LS measurements and two independent IC measurements were made, all of which spanned two to four half-lives. Weighted nonlinear fits of the data resulted in half-lives of 9.68 min 0.04 min and 9.673 min 0.026 min (uncertainties are combined standard uncertainties) for the LS and IC data, respectively (a difference of only 0.07%). The weighted mean of these two values is 9.67 min 0.03 min, which is shorter than the ENSDF-recommended value of 9.74 min 0.02 min by 0.7%. Since this radionuclide is being investigated for use in positron emission tomography (PET), this difference in the half-life has an important effect on the estimation of the amount of radioactivity administered to patients when decay corrections must be applied.Keywords
This publication has 4 references indexed in Scilit:
- New and revised half-life measurements resultsNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1992
- Excitation functions of (n, p) and (n, 2n) reactions for some isotopes of K, Mn, Zn and CuNuclear Physics A, 1969
- Precision half-life measurements of fourteen positon-emitting nucleiNuclear Physics, 1965
- The Examination and Analysis of ResidualsTechnometrics, 1963