Experimental investigations of changes in the rate of beta decay of radioactive elements

Baurov, Yu. A.; Sobolev, Yu. G.; Ryabov, Yu. V.; Kushniruk, V. F.

doi:10.1134/s1063778807110014

Cited by 46 publications

(60 citation statements)

References 4 publications

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“…They concluded that there is serious evidence of solar influence on decay rate [3]. Other experimental results confirming this conclusion have been also presented [4,5]. …”

Section: Motivationsupporting

confidence: 71%

Solar Influence on Decay Rate (SIDR) Experiment

Bashindzhagyan¹

2016

Proceedings of the 34th International Cosmic Ray Conference — PoS(ICRC2015)

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The goal of the proposed experiment is to check the evidence for a possible solar influence on nuclear decay rates, and to measure any effect quantitatively. Simultaneous decay rate measurements with many identical radioactive sources would allow us to study any possible correlations between their rate changes, and thus to improve the accuracy and reliability of the measurements. Positioning the sources with various distances between them (up to 2000 km), and at different altitudes above sea level and underground, will help to determine which particles, rays and other outside influences can be responsible for nuclear decay rate changes (if they really exist).

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“…They concluded that there is serious evidence of solar influence on decay rate [3]. Other experimental results confirming this conclusion have been also presented [4,5]. …”

Section: Motivationsupporting

confidence: 71%

Solar Influence on Decay Rate (SIDR) Experiment

Bashindzhagyan¹

2016

Proceedings of the 34th International Cosmic Ray Conference — PoS(ICRC2015)

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“…If we find that, for some isotopes, the timing of decays does not conform to the expectations of this model, we must question these assumptions. One would then need to consider the possibilities that decays may be due in part to a cosmological particle or radiation flux, as has been suggested by Baurov et al (2007), or that the axis of rotation of the solar core is not parallel to that of the photosphere.…”

Section: Discussionmentioning

confidence: 99%

Concerning the Phases of the Annual Variations of Nuclear Decay Rates

Sturrock

Buncher

Fischbach

et al. 2011

ApJ

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Recent analyses of data sets acquired at the Brookhaven National Laboratory and at the Physikalisch-Technische Bundesanstalt both show evidence of pronounced annual variations, suggestive of a solar influence. However, the phases of decay-rate maxima do not correspond precisely to the phase of minimum Sun-Earth distance, as might then be expected. We here examine the hypothesis that decay rates are influenced by an unknown solar radiation, but that the intensity of the radiation is influenced not only by the variation in Sun-Earth distance, but also by a possible north-south asymmetry in the solar emission mechanism. We find that this can lead to phases of decay-rate maxima in the range 0-0.183 or 0.683-1 (September 6 to March 8) but that, according to this hypothesis, phases in the range of 0.183-0.683 (March 8 to September 6) are "forbidden." We find that phases of the three data sets analyzed here fall in the allowed range.

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“…However, recent work has uncovered evidence of an unexpected periodicity in several nuclear decays [2,3,4,5,6]. An examination of the periodic behavior exhibited by the data indicated that the primary frequency observed in each data set corresponded to a period of close to one year [7,8].…”

Section: Introductionmentioning

confidence: 99%

Power spectrum analyses of nuclear decay rates

Javorsek

Sturrock

Lasenby³

et al. 2010

Astroparticle Physics

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We provide the results from a spectral analysis of nuclear decay data displaying annually varying periodic fluctuations. The analyzed data were obtained from three distinct data sets: 32 Si and 36 Cl decays reported by an experiment performed at the Brookhaven National Laboratory (BNL), 56 Mn decay reported by the Children's Nutrition Research Center (CNRC), but also performed at BNL, and 226 Ra decay reported by an experiment performed at the Physikalisch-Technische-Bundesanstalt (PTB) in Germany. All three data sets exhibit the same primary frequency mode consisting of an annual period. Additional spectral comparisons of the data to local ambient temperature, atmospheric pressure, relative humidity, Earth-Sun distance, and their reciprocals were performed. No common phases were found between the factors investigated and those exhibited by the nuclear decay data. This suggests that either a combination of factors was responsible, or that, if it was a single factor, its effects on the decay rate experiments are not a direct synchronous modulation. We conclude that the annual periodicity in these data sets is a real effect, but that further study involving additional carefully controlled experiments will be needed to establish its origin.

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Experimental investigations of changes in the rate of beta decay of radioactive elements

Abstract: The experimental data on continuous investigation of changes in β-decay count rate of 137 Cs and 60 Co from 9.12.98 till 30.04.99, are presented. The 27-day and 24-hour periods in these changes, inexplicable by traditional physics, have been found.

Cited by 46 publications

References 4 publications

Solar Influence on Decay Rate (SIDR) Experiment

Solar Influence on Decay Rate (SIDR) Experiment

Concerning the Phases of the Annual Variations of Nuclear Decay Rates

Power spectrum analyses of nuclear decay rates

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