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The half live of (53)V has been determined by measurement of (53)V radioactivity produced via (53)Cr(n,p)(53)V and (54)Cr(n,np+d)(53)V reactions that were induced by the irradiation of an elemental chromium metal sample with fast neutrons. Neutrons with an average energy of 19.1 MeV were generated by means of (3)H(d,n)(4)He reactions initiated by the bombardment of a titanium-tritide target with a beam of 3-MeV deuterons from a Van de Graaff accelerator. The full energy peak yield of 1006 keV gamma rays from (53)V decay was measured with an intrinsic germanium detector. Twenty five independent decay curves were acquired through repeated irradiations followed by gamma-ray counting. The acquired data (171 data points in all) were analysed using the method of weighted least-squares. Each individual decay curve yielded an independent value for (53)V half life. The 25 independent half-life values determined in this way were averaged to yield a final value for the (53)V half life: 93.4 ± 1.3 s (1 standard deviation error). Although smaller than all but one of the other values reported in the literature, it is consistent with most of them within the given errors. The present result and the earlier experimental values were then used to produce a new evaluation (recommended value) for the (53)V half life: 92.4 ± 1.1 s (1 standard deviation error).

Additional information

Authors: FESSLER A, JRC Geel (BE);SMITH D L, Argonne National Laboratory, Technology Development Division (US)
Bibliographic Reference: Article: Radiochimica Acta
Record Number: 199710402 / Last updated on: 1997-04-23
Original language: en
Available languages: en