Publication:
Evaluation for half-lives in α-decay chains of <sup>309−312</sup>126 based on semi-empirical approaches
Evaluation for half-lives in α-decay chains of <sup>309−312</sup>126 based on semi-empirical approaches
| datacite.subject.fos | oecd::Engineering and technology | |
| dc.contributor.author | N D Ly | |
| dc.contributor.author | N N Duy | |
| dc.contributor.author | K Y Chae | |
| dc.contributor.author | Vinh N T Pham | |
| dc.contributor.author | T V Nhan-Hao | |
| dc.date.accessioned | 2022-11-03T08:31:39Z | |
| dc.date.available | 2022-11-03T08:31:39Z | |
| dc.date.issued | 2020 | |
| dc.description.abstract | In this paper, we estimated half-lives using semi-empirical formulae for isotopes with Z=100−126 in four α-decay chains, which can appear in the syntheses of the 309−312126 nuclei. The spontaneous fission half-lives were calculated using the Anghel, Karpov, and Xu models, whereas theα-decay ones were predicted using the Viola-Seaborg, Royer, Akrawy, Brown, modified formulae of Royer, Ni, and Qian approaches.Wefound that there are large differences among the spontaneous fission half-lives estimated using the Xu model and those calculated using the others, which are up to 50 orders of magnitude. The α-decay half-lives also have large uncertainties due to difference in either methods or uncertainties in nuclear mass and spin-parities. Subsequently, there is an argument in determination of α-emitters, especially for the 312126 isotope. On the other hand, the α-decay half-lives are in the range from a few microseconds (309−312126) to thousands of years (257−260Fm) in the decay chains. It was found that the half-lives are very sensitive to not only the shell closure but also the angular momentum in theα decay. For experiments, with relatively long half-lives (a few milliseconds), the 289−292Lv isotopes can be observed as evidences for syntheses of the unknown super-heavy 309−312126 nuclei. Furthermore, measurements for precise mass, fission barrier, and spin-parity are necessary to improve accuracy of half-life predictions for super-heavy nuclei. | |
| dc.identifier.doi | 10.1088/1402-4896/abd49b | |
| dc.identifier.uri | http://repository.vlu.edu.vn:443/handle/123456789/815 | |
| dc.language.iso | en_US | |
| dc.relation.ispartof | Physica Scripta | |
| dc.relation.issn | 0031-8949 | |
| dc.relation.issn | 1402-4896 | |
| dc.subject | super-heavy nuclei | |
| dc.subject | alpha decay | |
| dc.subject | spontaneous fission | |
| dc.subject | fission barrier | |
| dc.subject | half-life | |
| dc.title | Evaluation for half-lives in α-decay chains of <sup>309−312</sup>126 based on semi-empirical approaches | |
| dc.type | journal-article | |
| dspace.entity.type | Publication | |
| oaire.citation.issue | 3 | |
| oaire.citation.volume | 96 |
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