2020/05/08 by H. M. Liu, Junfeng Xu, Liu, H. M. +7
Physics and Astronomy · #FOS: Physical sciences #Nuclear Physics and Applications #Nuclear Theory (nucl-th) #Nuclear physics research studies #Scientific Research and Discoveries
paper · pdf · doi:10.48550/arxiv.2005.03831
openalex publication_date 2020/05/08 · openalex created_date 2020/05/13 · openalex updated_date 2026/07/28
In present work, we systematically study the α decay half-lives of 170 even-even nuclei with 60 \leqslant Z \leqslant 118 within the two-potential approach while the α decay preformation factor Pα is obtained by the cluster-formation model. The calculated results can well reproduce the experimental data. In addition, we extend this model to predict the α decay half-lives of 64 even-even nuclei with 104 \leqslant Z \leqslant 128 whose α decay is energetically allowed or observed but not yet quantified. For comparing, the two famous models i.e. SemFIS proposed by D. Poenaru et al. [\href https://doi.org/10.1209/0295-5075/77/62001Europhys. Lett. 77 (2007) 62001] and UDL proposed by C. Qi et al. [\href https://doi.org/10.1103/PhysRevLett.103.072501Phys. Rev. Lett. 103 (2009) 072501] are used. The predicted results of these models are basically consistent. At the same time, through analyzing the changing trend of α decay energy Qα of Z = 118, 120, 122, 124, 126 and 128 isotopes nuclei with the increasing of neutron number N and that of α decay preformation factor Pα of those isotopes even-even nuclei with the increasing of neutron number N, N = 178 may be a new neutron magic number.