Additional experimental evidence for a solar influence on nuclear decay rates

Abstract

Additional experimental evidence is presented in support of the recent hypothesis that a possible solar influence could explain fluctuations observed in the measured decay rates of some isotopes. These data were obtained during routine weekly calibrations of an instrument used for radiological safety at The Ohio State University Research Reactor using Cl-36. The detector system used was based on a Geiger-Mueller gas detector, which is a robust detector system with very low susceptibility to environmental changes. A clear annual variation is evident in the data, with a maximum relative count rate observed in January/February, and a minimum relative count rate observed in July/August, for seven successive years from July 2005 to June 2011. This annual variation is not likely to have arisen from changes in the detector surroundings, as we show here.

8 pages, 6 figures

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Cited by in corpus (9)

• Disproof of solar influence on the decay rates of 90Sr/90Y
• Concerning the Phase of the Time-Variation in the Cl-36 Decay Rate
• Spectral Content of 22Na/44Ti Decay Data: Implications for a Solar Influence
• Precision long-term measurements of beta-decay-rate ratios in a controlled environment
• Solar Influence on Nuclear Decay Rates: Constraints from the MESSENGER Mission
• Anomalies in Radioactive Decay Rates: A Bibliography of Measurements and Theory
• Search for Possible Solar Influences in Ra-226 Decays
• Sensitivity of reactor experiments to nonstandard neutrino interactions in beta decay rates
• Test of Nuclear Decay Rate Variation due to an Antineutrino Flux