Evidence of correlations between nuclear decay rates and Earth–Sun distance
Jere H. Jenkins,Ephraim Fischbach,J. B. Buncher,J. T. Gruenwald,Dennis E. Krause,Dennis E. Krause,J. J. Mattes +6 more
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In this paper, the decay rates of 32 Si and 226 Ra have been investigated at Brookhaven National Laboratory (32 Si) and at the Physikalisch-Technische-Bundesanstalt in Germany (226 Ra).About:
This article is published in Astroparticle Physics.The article was published on 2009-08-01 and is currently open access. It has received 185 citations till now. The article focuses on the topics: Radioactive decay.read more
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Varying Constants, Gravitation and Cosmology
TL;DR: The relations between the constants, the tests of the local position invariance and of the universality of free fall are detailed, and the unification mechanisms and the relation between the variation of different constants are described.
Journal ArticleDOI
Dark matter investigation by dama at gran sasso
R. Bernabei,P. Belli,S. d'Angelo,A. Di Marco,F. Montecchia,F. Cappella,Annalisa D'Angelo,A. Incicchitti,V. Caracciolo,S. Castellano,R. Cerulli,C. J. Dai,H. L. He,Xinhua Ma,Xiangdong Sheng,Rong Wang,Z. P. Ye +16 more
TL;DR: In this article, a review of the present model independent positive results obtained by the DAMA/NaI/DAMA/LIBRA setups at the Gran Sasso National Laboratory of the INFN is presented.
Journal ArticleDOI
Dark Matter investigation by DAMA at Gran Sasso
R. Bernabei,P. Belli,S. d'Angelo,A. Di Marco,F. Montecchia,F. Cappella,Annalisa D'Angelo,A. Incicchitti,V. Caracciolo,S. Castellano,R. Cerulli,C. J. Dai,H. L. He,Xinhua Ma,Xiangdong Sheng,Rong Wang,Z. P. Ye +16 more
TL;DR: In this paper, a review of the present model independent positive results obtained by the DAMA/NaI/DAMA/LIBRA set-ups at the Gran Sasso National Laboratory of the INFN is presented.
Journal ArticleDOI
Time-Dependent Nuclear Decay Parameters: New Evidence for New Forces?
Ephraim Fischbach,J. B. Buncher,J. T. Gruenwald,Jere H. Jenkins,Dennis E. Krause,J. J. Mattes,J. R. Newport +6 more
TL;DR: The question of whether nuclear decay rates (or half-lives) are time-independent constants of nature, as opposed to being parameters which can be altered by an external perturbation has been discussed in this paper.
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Perturbation of nuclear decay rates during the solar flare of 2006 December 13
TL;DR: In this paper, the decay rate of 54 Mn was detected during the solar flare of 2006 December 13, whose X-rays were first recorded at 02:37 UT (21:37 EST on 2006 December 12).
References
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First results from DAMA/LIBRA and the combined results with DAMA/NaI
R. Bernabei,P. Belli,F. Cappella,R. Cerulli,C. J. Dai,A. d'Angelo,H. L. He,A. Incicchitti,H. H. Kuang,J. M. Ma,F. Montecchia,F. Nozzoli,D. Prosperi,Xiangdong Sheng,Z. P. Ye +14 more
TL;DR: In this article, the authors presented the first result obtained by exploiting the model independent annual modulation signature for Dark Matter (DM) particles, which refers to an exposure of 0.53 ton×yr.
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The fundamental constants and their variation: observational and theoretical status
Abstract: This article describes the various experimental bounds on the variation of the fundamental constants of nature. After a discussion of the role of fundamental constants, their definition and link with metrology, it reviews the various constraints on the variation of the fine-structure constant, the gravitational, weak- and strong-interaction couplings and the electron-to-proton mass ratio. The review aims (1) to provide the basics of each measurement, (2) to show as clearly as possible why it constrains a given constant, and (3) to point out the underlying hypotheses. Such an investigation is of importance in comparing the different results and in understanding the recent claims of the detection of a variation of the fine-structure constant and of the electron-to-proton mass ratio in quasar absorption spectra. The theoretical models leading to the prediction of such variation are also reviewed, including Kaluza-Klein theories, string theories, and other alternative theories. Cosmological implications of these results are also discussed. The links with the tests of general relativity are emphasized.
Book
Radiations from Radioactive Substances
TL;DR: In this paper, the authors provide a definitive account of the state of research into alpha, beta and gamma radiation in 1930, explaining the theory and process behind inferring the structure of the atom and the nucleus.
Radiations from Radioactive Substances
TL;DR: In this paper, the authors provide a definitive account of the state of research into alpha, beta and gamma radiation in 1930, explaining the theory and process behind inferring the structure of the atom and the nucleus.