forastero
Posts: 458
Joined: Oct. 2011
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| Quote (Tracy P. Hamilton @ Nov. 07 2011,23:35) | [quote=Tracy P. Hamilton,Nov. 07 2011,23:16]
Oops, another negative result, for a beta decaying nucleus! Bayesian prior for "artifact" just got a lot bigger...
| Quote | DO RADIOACTIVE HALF-LIVES VARY WITH THE EARTH-TO-SUN
DISTANCE?
J.C. Hardy*, J.R. Goodwin and V.E. Iacob#
Cyclotron Institute, Texas A&M University, College Station, TX 77845-3366, USA
Abstract
Recently, Jenkins, Fischbach and collaborators have claimed evidence that radioactive half-lives vary systematically over a ?0.1% range as a function of the oscillating distance between the Earth and the Sun, based on multi-year activity measurements. We have avoided the time-dependent instabilities to which such measurements are susceptible by directly measuring the half-life of 198Au (t1/2 = 2.695 d) on seven occasions spread out in time to cover the complete range of Earth-Sun distances. We observe no systematic oscillations in half-life and can set an upper limit on their amplitude of ?0.02%.
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Interesting but this gold isotope doesnt seem to have much decay experimentation to go on? Maybe that's why they skipped the multi-year activity measure?
Like I said the council of elders wont give up their radiomagic wands with out a bitter fight
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