# Search for long lived heaviest nuclei beyond the valley of stability

@article{Chowdhury2008SearchFL,
title={Search for long lived heaviest nuclei beyond the valley of stability},
author={P. Chowdhury and C. Samanta and D. N. Basu},
journal={Physical Review C},
year={2008},
volume={77},
pages={044603}
}
• Published 2008
• Physics
• Physical Review C
The existence of long lived superheavy nuclei (SHN) is controlled mainly by spontaneous fission and {alpha}-decay processes. According to microscopic nuclear theory, spherical shell effects at Z=114, 120, 126 and N=184 provide the extra stability to such SHN to have long enough lifetime to be observed. To investigate whether the so-called 'stability island' could really exist around the above Z, N values, the {alpha}-decay half-lives along with the spontaneous fission and {beta}-decay half… Expand
59 Citations

#### Figures and Tables from this paper

Alpha decay chains from superheavy nuclei
Abstract Magic islands for extra-stable nuclei in the midst of the sea of fission-instability were predicted to be around Z = 114 , 124 or, 126 with N = 184 , and Z = 120 , with N = 172 . WhetherExpand
Competition between α-decay and spontaneous fission for superheavy nuclei
• Physics
• 2015
The α-decay half-lives of recently synthesized superheavy nuclei (SHN) are investigated by employing a unified fission model (UFM) and Royer's analytical formula (2000 J. Phys. G: Nucl. Part. Phys.Expand
Double magic nuclei for Z>82 and N>126
• Physics
• 2012
The "island of stability" of superheavy nuclei due to shell effects is explored and the alpha-decay half-lives of these nuclei are predicted. The calculations of the binding energies within a newExpand
• Physics
• 2014
Abstract The feasibility for the alpha decay and the heavy particle decay from the even–even superheavy (SH) nuclei with Z = 116 – 124 has been studied within the Coulomb and proximity potentialExpand
Predictions for decay modes for superheavy nuclei Z=118–124
• Physics
• 2018
To study whether long-lived superheavy nuclei could really exist around $Z=120$ and $N=184$, the competition between $\ensuremath{\alpha}$ decay and spontaneous fission in the regionExpand
Possible α decay chains from isotopes of superheavy element 120
• Physics
• 2013
We investigate the α decay half-lives of even-Z superheavy nuclei up to Z = 120 by the modified two-potential approach. Based on the density-dependent cluster model, the α daughter potential isExpand
Probable Heavy Particle Decays from 306–339128 Superheavy Nuclei
• Physics
• 2016
The heavy particle decays that are probable from the isotopes of Z = 128 superheavy nuclei within the range A = 306–339 have been analyzed within the Coulomb and proximity potential model (CPPM). TheExpand
New approach for alpha decay half-lives of superheavy nuclei and applicability of WKB approximation
• Physics
• 2011
Abstract The α decay half-lives of recently synthesized superheavy nuclei (SHN) are calculated by applying a new approach which estimates them with the help of their neighbors based on some simpleExpand
α -decay energies of superheavy nuclei: Systematic trends
• Physics
• 2019
New superheavy nuclei are often identified through their characteristic $\alpha$-decay energies, which requires accurate calculations of $Q_{\alpha}$ values. While many $Q_{\alpha}$ predictions areExpand
Half-lives and fine structure for the α decay of deformed even-even nuclei
• Physics
• 2011
The α-decay properties of well-deformed even-even nuclei are systematically calculated within the multichannel cluster model (MCCM). Instead of working in the WKB framework, the quasibound solutionExpand

#### References

SHOWING 1-10 OF 115 REFERENCES
Calculation of half-lives for superheavy nuclei
• Physics
• 1972
Abstract We have performed a new calculation of the half-lives of superheavy nuclei with respect to spontaneous fission, α-decay and β-decay (including electron capture). The half-lives areExpand
Predictions of alpha decay half lives of heavy and superheavy elements
• Physics
• 2007
Abstract Theoretical estimates for the lifetimes of several isotopes of heavy elements with Z = 102 – 120 are presented by calculating the quantum mechanical tunneling probability in a WKB frameworkExpand
Theoretical and experimental α decay half-lives of the heaviest odd- Z elements and general predictions
• Physics
• 2007
Theoretical {alpha} decay half-lives of the heaviest odd-Z nuclei are calculated using the experimental Q{sub {alpha}} value. The barriers in the quasimolecular shape path are determined within aExpand
Systematical law of spontaneous fission half-lives of heavy nuclei
• Physics
• 2005
Systematic calculations on spontaneous fission half-lives of heavy nuclei are carried out by Swiatecki's formula with new parameters and by its generalized form. A new formula with only fourExpand
Properties of the hypothetical spherical superheavy nuclei
Theoretical results on the ground-state properties of the hypothetical spherical superheavy atomic nuclei are presented and discussed. Even-even isotopes of elements Z=104{minus}120 are considered.Expand
Valleys due to Pb and Sn on the potential energy surface of superheavy and lighter α-emitting nuclei
• Physics
• 2006
The strong shell effects of the magic nuclei 208Pb, 132Sn and 102Sn are the origin of valleys on the potential energy surfaces (PES) of the superheavy nucleus 294118 and of the alpha emitters 212PoExpand
Spontaneous-fission half-lives of deformed superheavy nuclei.
• Physics, Medicine
• Physical review. C, Nuclear physics
• 1995
Spontaneous-fission half-lives of the heaviest nuclei are analyzed in a multidimensional deformation space and are predicted for many unknown nuclei, sufficient to detect them if synthesized in a laboratory. Expand
Nuclear physics: Island ahoy!
Spectroscopy of the nobelium isotope, 254No reveals three excited structures, two of them metastable, which will help to constrain nuclear models of the superheavy elements, and provides more data for the search for the next magic numbers. Expand
α decay half-lives of new superheavy elements
• Physics
• 2006
The lifetimes of \ensuremath{\alpha} decays of the recently produced isotopes of elements 112, 114, 116, and ${}^{294}118$ and of some decay products are calculated theoretically within the WKBExpand
Spontaneous fission half-lives of heavy nuclei in ground state and in isomeric state
• Physics
• 2005
Abstract We generalize the formulas of spontaneous fission half-lives of even–even nuclei in their ground state to both the case of odd nuclei and the case of fission isomers [Phys. Rev. C 71 (2005)Expand