Volume 110, Number 5, June 2015
|Number of page(s)||5|
|Published online||10 June 2015|
Search for non-standard radioactive decay based on distribution of activities
Department of Physics, Trinity College - Hartford, CT 06106, USA
Received: 14 April 2015
Accepted: 29 May 2015
Standard radioactive decay occurs exponentially at a constant rate which, apart from a few well-understood exceptions, is unaffected by external conditions. Recent papers challenging standard decay have reported periodic variations in the decay rate of certain nuclei that correlate with geophysical or astrophysical periodicities. The effects are weak and their origins have been disputed. This paper proposes an alternative method to search for non-standard radioactive decay based on the distribution of decay events, rather than on deviations from the exponential decay law. It is shown that a time series of nuclear decays comprise a Mixed Poisson-Gauss distribution whose probability function is very sensitive to periodic variations in the decay rate.
PACS: 24.80.+y – Nuclear tests of fundamental interactions and symmetries / 29.85.Fj – Data analysis / 21.10.Tg – Lifetimes, widths
© EPLA, 2015
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.