首页|Improved effective liquid drop model for alpha-decay half-lives
Improved effective liquid drop model for alpha-decay half-lives
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NSTL
Elsevier
The effective liquid drop model (ELDM) is improved by introducing an accurate nuclear charge radius formula and an analytic expression of the effective assaulting frequency. Within the improved effective liquid drop model (IMELDM), the alpha-decay half-lives of 421 nuclei which have been measured in experiment are calculated. It is shown that the accuracy of the IMELDM is improved evidently compared to its predecessor. Meanwhile, by focusing on the superheavy nuclei (SHN), the alpha-decay half-lives of SHN are investigated within the IMELDM. It is found that the experimental alpha-decay half-lives of 80 SHN are reproduced well. Then, within the IMELDM the alpha-decay half-lives of the Z=118-121 isotopes are predicted by inputting the alpha-decay energies (Q(alpha)) extracted from the Weizsacker-Skyrme-4 (WS4) mass table. At last, the competition between the alpha-decay and spontaneous fission (SF) of the SHN of the N=178 alpha-decay chains is studied in detail, which may be useful for searching for the new SHN in future. (c) 2021 Elsevier B.V. All rights reserved.
alpha-decayHalf-lifeEffective liquid drop modelSuperheavy nucleiCLUSTER RADIOACTIVITYSPONTANEOUS FISSIONSUPERHEAVY NUCLEIDISCOVERYEMISSIONELEMENTSSEARCHMASSESCHARGE
NSTL
Elsevier
