Spectral Content in 3H and 14C Decays: A Review of Five Experiments

Main Article Content

R. H. Lee E. Fischbach J. T. Gruenwald D. Javorsek II http://orcid.org/0000-0002-0329-4011 P. A. Sturrock


We conduct a generalized spectral analysis of previously published data to re-examine new reports of annual and monthly periodicities in the decay of 3H and 14C.  We find no common spectral content in two pairs of simultaneously measured 3H and 14C samples, suggesting fluctuations over the nearly nine year experiment are systematic effects rather than evidence of solar influence on decay rates.  Direct comparisons to three other 3H experiments with anomalous results also suggest the presence of systematic effects rather than the appearance of new physics.

Article Details

How to Cite
LEE, R. H. et al. Spectral Content in 3H and 14C Decays: A Review of Five Experiments. Quarterly Physics Review, [S.l.], v. 3, n. 2, july 2017. ISSN 2572-701X. Available at: <https://esmed.org/MRA/qpr/article/view/1258>. Date accessed: 05 dec. 2022.


Falkenberg ED. Radioactive decay caused by neutrinos. Apeiron. 2001; 8(2): 32–45.

Veprev DP, Muromtsev VI. Evidence of solar influence on the tritium decay rate. Astroparticle Physics. 2012; 36(1): 26–30.

Lobashev V, Aseev V, Belesev A, et al. Direct search for neutrino mass and anomaly in the tritium beta-spectrum: Status of “Troitsk neutrino mass” experiment. Nuclear Physics B - Proceedings Supplements. 2001; 91(1-3): 280–286.

Jenkins JH, Fischbach E, Buncher JB, Gruenwald JT, Krause DE, Mattes JJ. Evidence of correlations between nuclear decay rates and Earth–Sun distance. Astroparticle Physics. 2009; 32(1): 42–46.

Jenkins JH, Herminghuysen KR, Blue TE, et al. Additional experimental evidence for a solar influence on nuclear decay rates. Astroparticle Physics. 2012; 37: 81–88.

Javorsek D, Sturrock PA, Lasenby RN, et al. Power spectrum analyses of nuclear decay rates. Astroparticle Physics. 2010; 34(3): 173–178.

Pommé S, Camps J, Ammel R, Paepen J. Protocol for uncertainty assessment of half-lives. Journal of Radioanalytical and Nuclear Chemistry. 2008; 276(2): 335–339.

Jaubert F, Tartès I, Cassette P. Quality control of liquid scintillation counters. Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine. 2006; 64(10-11): 1163-70.

Brito HF, Hölsä J, Jungner H, et al. Persistent luminescence fading in Sr2MgSi2O7:Eu2+,R3+ materials: a thermoluminescence study. Optical Materials Express. 2012; 2(3): 287.

Berberan-Santos MN, Valeur B. Luminescence decays with underlying distributions: General properties and analysis with mathematical functions. Journal of Luminescence. 2007; 126(2): 263-272.

Bruhn GW. Does Radioactivity Correlate with the Annual Orbit of Earth around Sun? Apeiron. 2002; 9(2): 28.

Press WH. Numerical recipes in FORTRAN: the art of scientific computing (Vol. 1). Cambridge, UK: Cambridge University Press; 1992.

Bahcall JN, Press WH. Solar-cycle modulation of event rates in the chlorine solar neutrino experiment. The Astrophysical Journal. 1991; 370: 730-742.

Sturrock PA, Fischbach E, Jenkins JH. Further Evidence Suggestive of a Solar Influence on Nuclear Decay Rates. Solar Physics. 2011; 272(1): 1–10.