Study of nuclear decays during a solar eclipse: Thule Greenland 2008

Javorsek, D.; Brewer, Matt; Buncher, John B.; Fischbach, Ephraim; Gruenwald, J. T.; Heim, Jordan; Hoft, A. W.; Horan, T. J.; Kerford, J. L.; Kohler, M.; Lau, Josephine; Longman, A.; Mattes, J. J.; Mohsinally, T.; Newport, J. R.; Petrelli, M. A.; Stewart, Charles J.; Jenkins, Jere H.; Lee, R. H.; Morreale, B.; Morris, Deborah; Mudry, R.; O’Keefe, D.; Terry, B.; Silver, M. A.; Sturrock, P. A.

doi:10.1007/s10509-012-1148-9

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…In contrast, other searches for the influence of solar flares [20], [33], an eclipse [34], or other frequency components [25] have yielded negative results.…”

Section: Introductionmentioning

confidence: 87%

Search for possible solar influences in Ra-226 decays

et al. 2017

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Measurements of Ra-226 activity from eight HPGe gamma ray detectors at the NC State University PULSTAR Reactor were analyzed for evidence of periodic variations, with particular attention to annual variations. All measurements were made using the same reference source, and data sets were of varying length taken over the time period from September 1996 through August 2014. Clear evidence of annual variations was observed in data from four of the detectors. Short time periodograms from the data sets suggest temporal variability of both the amplitude and frequency of these variations. The annual variations in two of the data sets show peak values near the first of February, while surprisingly, the annual variations in the other two are roughly out of phase with the first two. Three of the four detectors exhibited annual variations over approximately the same time period. A joint statistic constructed by combining spectra from these three shows peaks approximating the frequencies of solar r-mode oscillations with 11.74 R ν = cpy, 1, m = and 3, 5, 6. l =The fact that similar variations were not present in all detectors covering similar time periods rules out variations in activity as the cause, and points to differing sensitivities to unspecified environmental parameters instead. In addition to seasonal variations, the modulation of environmental parameters by solar processes remains a possible explanation of periodogram features, but without requiring new physics.

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“…In contrast, other searches for the influence of solar flares [20], [33], an eclipse [34], or other frequency components [25] have yielded negative results.…”

Section: Introductionmentioning

confidence: 87%

Search for possible solar influences in Ra-226 decays

et al. 2017

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Anomalies in Radioactive Decay Rates: A Bibliography of Measurements and Theory

McDuffie¹,

Graham²,

Eppele³

et al. 2020

Preprint

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Knowledge of the decay rates (or half-lives) of radioisotopes is critical in many fields, including medicine, archeology, and nuclear physics, to name just a few. Central to the many uses of radioisotopes is the belief that decay rates are fundamental constants of nature, just as the masses of the radioisotopes themselves are. Recently, the belief that decay rates are fundamental constants has been called into question following the observation of various reported anomalies in decay rates, such as apparent periodic variations. The purpose of this bibliography is to collect in one place the relevant literature on both sides of this issue in the expectation that doing so will deepen our understanding of the available data.

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Study of nuclear decays during a solar eclipse: Thule Greenland 2008

Cited by 2 publications

References 15 publications

Search for possible solar influences in Ra-226 decays

Search for possible solar influences in Ra-226 decays

Anomalies in Radioactive Decay Rates: A Bibliography of Measurements and Theory

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