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alpha-decay half-lives of superheavy nuclei
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Physics.
2018 (English)In: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 97, no 1, article id 014316Article in journal (Refereed) Published
Abstract [en]

The alpha-decay half-lives of superheavy nuclei (SHN) with Z >= 104 are investigated by employing the effective liquid drop model (ELDM). By comparison between the calculated half-lives and the experimental ones, it is shown that the ELDM is a successful model to reproduce the experimental half-lives of SHN. Within the ELDM the alpha-decay half-lives of Z = 118-120 isotopes are predicted by inputting the alpha-decay energy (Q(alpha)) values extracted from the newest Weizsacker-Skyrme-4 (WS4) model, the finite-range droplet model (FRDM), the Kourra-Tachibaba-Uno-Yamada (KTUY) formula, and the Hartree-Fock-Bogoliubovmean field with the D1S Gogny force (GHFB). It is found that the shell effects at N = 178 and 184 are evident by analyzing the Q(alpha) values and half-lives versus the neutron number N. Because the WS4 Q(alpha) values have the smallest rms deviation, the predicted alpha-decay half-lives could be more accurate than the ones of other models, which will be helpful for future experiments.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2018. Vol. 97, no 1, article id 014316
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-222179DOI: 10.1103/PhysRevC.97.014316ISI: 000423233000002Scopus ID: 2-s2.0-85041016151OAI: oai:DiVA.org:kth-222179DiVA, id: diva2:1180786
Note

QC 20180206

Available from: 2018-02-06 Created: 2018-02-06 Last updated: 2018-02-06Bibliographically approved

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