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Absence of a self-induced decay effect in Au |
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| Authors: | Richard M LindstromEphraim Fischbach John B BuncherJere H Jenkins Andrew Yue |
| Affiliation: | a Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA b Department of Physics, Purdue University, West Lafayette, IN 47907, USA c Department of Physics, Wittenberg University, Springfield, OH 45501, USA d School of Nuclear Engineering, Purdue University, 400 Central Dr., West Lafayette, IN 47907, USA e Department of Physics, University of Tennessee, Knoxville, TN 37996, USA |
| Abstract: | We report the results of an improved experiment aimed at determining whether the half-life (T1/2) of 198Au depends on the shape of the source. In this experiment, the half-lives of a gold sphere and a thin gold wire were measured after each had been irradiated in the NIST Center for Neutron Research. In comparison to an earlier version of this experiment, both the specific activities of the samples and their relative surface/volume ratios have been increased, leading to an improved test for the hypothesized self-induced decay (SID) effect. We find T1/2(sphere)/T1/2(wire)=(0.9993±0.0002), which is compatible with no SID effect. |
| Keywords: | Beta decays Neutrinos Nuclear decay lifetimes |
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