Alpha decay in electron environments of increasing density: From the bare nucleus to compressed matter

Belloni, F.

doi:10.1140/epja/i2016-16032-3

Cited by 7 publications

(3 citation statements)

References 55 publications

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“…Parkhomov [23] found 7 data sets of beta-decaying radionuclides exhibiting periodic variations with a period of 1 year. Influence by the chemical environment was put back on the table when reports claimed changes at a 10 −2 level in α, β − and β + and EC decay constants depending on temperature and conductivity of the hosting material (see references in [24,25]). Theoretical considerations predict an influence of the electron environment on α decay, leading to significantly shorter half-lives at high matter densities (up to 10% at 10 4 g cm −3 in a high-Z matrix) [25] which has implications for cosmochronology.…”

Section: Introductionmentioning

confidence: 99%

On decay constants and orbital distance to the Sun—part I: alpha decay

et al. 2016

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Claims that proximity to the Sun causes variation of decay constants at permille level have been investigated for alpha decaying nuclides. Repeated decay rate measurements of 209 Po, 226 Ra, 228 Th, 230 U, and 241 Am sources were performed over periods of 200 d up to two decades at various nuclear metrology institutes around the globe. Residuals from the exponential decay curves were inspected for annual oscillations. Systematic deviations from a purely exponential decay curve differ in amplitude and phase from one data set to another and appear attributable to instabilities in the instrumentation and measurement conditions. The most stable activity measurements of α decaying sources set an upper limit between 0.0006% and 0.006% to the amplitude of annual oscillations in the decay rate. There are no apparent indications for systematic oscillations at a level of weeks or months. Oscillations in phase with Earth's orbital distance to the sun could not be observed within 10 −5 -10 −6 range precision.

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Section: Introductionmentioning

confidence: 99%

On decay constants and orbital distance to the Sun—part I: alpha decay

et al. 2016

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“…The main error of the FS model is in the identification of the inner electrostatic Coulomb potential times 2e with the potential energy of the α particle in its motion through the electronic shell [2,9]. Non-identity of these concepts is demonstrated in the best way by addition of the constant into Eq.…”

Section: Discussionmentioning

confidence: 99%

Prospects for study of the effect of the electronic screening on the $α$ decay in the storage rings

Karpeshin,

Trzhaskovskaya,

Vitushkin

2021

Preprint

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Study of the role of the electron screening in the α decay is advanced, aimed at the experimental test in the storage rings. To this end, systematic calculation of the effect in heavy ions of the nuclei within the Ra to Po domain of the alpha emitters is conducted within the adiabatic approach. The obtained effect is to slow down the decay by an amount within the percent value. It is of the opposite sign comparing to what is predicted within the conventional frozen shell model. The reason for this divergence is demonstrated. Testing this difference experimentally in storage ring facilities is proposed. It is of great interest for advancing the astrophysical fundamental research.

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“…All these procedures appear remarkable even if the theoretical bases are either not clear or not defined at all. The theories involved for justifying the radionuclide deactivation are different: the biquaternion quantum mechanics proposed by Conte [6], the Giuliano Preparata's hypothesis [7], the Infoton theory by Brillouin [8] and Dirac [9], the Widom and Larsen [10] implemented by Srivastava et al [11], the electronic density increase hypothesis [12], the nuclear lattice model by Dallacasa and Cook [13]. The common background for all these theories is the standard model of particle physics, under strict conditions and absolute observation both of the Minkowski space-time and of local Lorentz invariance.…”

Section: Introductionmentioning

confidence: 99%

The astonishing 63Ni radioactivity reduction in radioactive wastes by means of ultrasounds application

2019

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Nowadays, the radioactive wastes production is certainly one of the main issues along with their storage. The most interesting way to treat them would certainly be the radioactivity reduction. In this paper we show that the 63 Ni radioactivity reduction by ultrasounds is not a violation of the exponential decay law but can be explained by the Deformed Space-Time theory. The cavitation procedure under the DST conditions achieves a radioactivity decrease around 14% in 200 s. Comparing these results with the theoretical ones obtained by the decay law, we earn more than 20 years in the 63 Ni radioactivity decrease. For confirming the data, ICP-MS measurements were performed on cavitated and nocavitated samples: once again, the 14%-difference (with CV 5%) was obtained from the analyses of both samples. Even if the data are not definitive, the new idea is that a radioactive substance can be "normalized" by its transformation into a normal stable one without radiation emission overcoming the traditional approaches (dilution, inertization, radioactive transmutation with fast neutron irradiation) and avoiding the use of large deposits or big reactors. Our results may be considered as starting point to pave the way to new methods to treat useless harmful radioactive substances from nuclear or medicine industry.

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Alpha decay in electron environments of increasing density: From the bare nucleus to compressed matter

Cited by 7 publications

References 55 publications

On decay constants and orbital distance to the Sun—part I: alpha decay

On decay constants and orbital distance to the Sun—part I: alpha decay

Prospects for study of the effect of the electronic screening on the $α$ decay in the storage rings

The astonishing 63Ni radioactivity reduction in radioactive wastes by means of ultrasounds application

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