Alpha decay perturbations by atomic effects at extreme conditions

Eliezer, S.; Val, José María Martínez; Piera, M.

doi:10.1016/j.physletb.2009.01.056

Cited by 6 publications

(15 citation statements)

References 20 publications

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“…A recent study demonstrated that the electron screening potential in the inner part of a nucleus is smaller than in the external region due to the energy of the α particle; this difference should lead to a slightly increased α decay rate in a metallic environment [13]. Eliezer et al [28] calculated a decrease of about 1% of the decay half-life for 210 Po embedded in Pd at T = 4 K. However, from Ref. [3], the temperature effect was negligible.…”

Section: Data Analysis and Resultsmentioning

confidence: 99%

Determination of theα-decay half-life ofPo210based on film and slice bismuth samples at room temperature

Qing-hua

Wang

et al. 2015

Phys. Rev. C

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The α decay rate of 210 Po was measured in a film sample (210 Po @Bi 2 O 3) and a slice sample (210 Po @Bi metal), respectively. The former was used as a reference sample. The half-lives of 210 Po @Bi 2 O 3 and 210 Po @Bi metal environments were observed to be (138.40 ± 0.21 d) and (138.87 ± 0.87 d) at room temperature, respectively. It was found that the half-life of 210 Po is consistent with international recommendations within the uncertainty limits, and we did not find any deviation of the α decay rate of 210 Po between film sample (210 Po @Bi 2 O 3) and slice sample (210 Po @Bi metal).

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Section: Data Analysis and Resultsmentioning

confidence: 99%

Determination of theα-decay half-life ofPo210based on film and slice bismuth samples at room temperature

Qing-hua

Wang

et al. 2015

Phys. Rev. C

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“…We have already commented about the findings of Patyk et al [7] and Eliezer et al [18] in Sects. 4.1 and 4.2, respectively.…”

Section: Comparison With Previous Workmentioning

confidence: 90%

“…Along the mechanism just described, we have estimated the lifetime variation in ions, neutral atoms and compressed matter for three selected nuclides (Table 1), which span representative ranges of Z and half-life values, and have been considered in previous studies (e.g. [7,13,18]) as well. We have calculated the ratio…”

Section: Methodsmentioning

confidence: 99%

“…are to be used. In the case of compressed matter, the electron energy calculated this way automatically includes the contribution of the free electrons, which are contained within the WS cell in the frame of the TF model; their abundance relative to the density of bound electrons is predominant in the outer layer of the cell.The same conditions assumed by Eliezer et al[18] have here been adopted for α emitters in compressed matter, i.e. nuclides dispersed into a Pb matrix ( 3 ).…”

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confidence: 99%

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

Belloni

2016

Eur. Phys. J. A

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The influence of the electron environment on the α decay is elucidated. Within the frame of a simple model based on the generalized Thomas-Fermi theory of the atom, it is shown that the increase of the electron density around the parent nucleus drives a mechanism which shortens the lifetime. Numerical results are provided for 144 Nd, 154 Yb and 210 Po. Depending on the nuclide, fractional lifetime reduction relative to the bare nucleus is of the order of 0.1÷1% in free ions, neutral atoms and ordinary matter, but may reach up to 10% at matter densities as high as 10 4 g/cm 3 , in a high-Z matrix. The effect induced by means of state-of-the-art compression techniques, although much smaller than previously found, would however be measurable. The extent of the effect in ultra-high-density stellar environments might become significant and would deserve further investigation.

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“…The case of a static electric field is also discussed.In the context of an active topical research in laser-related physics,[1]-[5] the problem of charge emission from bound-states under the action of the electromagnetic radiation is receiving an increasing interest. Some investigations focus especially on the effect the optical-laser radiation may have on the spontaneous alpha-particle decay of the atomic nuclei,[6]- [11] or nuclear…”

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confidence: 99%

Electromagnetic-radiation effect on alpha decay

Apostoł¹

2018

OAJMTP

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The effect of the electromagnetic radiation on the spontaneous charge emission from heavy atomic nuclei is estimated in a model which may be relevant for proton emission and alpha-particle decay in laser fields. Arguments are given that the electronic cloud in heavy atoms screens appreciably the electric field acting on the nucleus and the nucleus "sees" rather low fields. In these conditions, it is shown that the electromagnetic radiation brings second-order corrections in the electric field to the disintegration rate, with a slight anisotropy. These corrections give a small enhancement of the disintegration rate. The case of a static electric field is also discussed.In the context of an active topical research in laser-related physics,[1]-[5] the problem of charge emission from bound-states under the action of the electromagnetic radiation is receiving an increasing interest. Some investigations focus especially on the effect the optical-laser radiation may have on the spontaneous alpha-particle decay of the atomic nuclei,[6]- [11] or nuclear

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Alpha decay perturbations by atomic effects at extreme conditions

Cited by 6 publications

References 20 publications

Determination of theα-decay half-life ofPo210based on film and slice bismuth samples at room temperature

Determination of theα-decay half-life ofPo210based on film and slice bismuth samples at room temperature

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

Electromagnetic-radiation effect on alpha decay

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