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Description
The global beta-decay calculations are presented which are based on the Density Functional developed by Fayans et.al. [1] and Continuum Quasiparticle Random-Phase Approximation. The DF3+CQRPA model [2] describes the data on the half-lives and probabilities of delayed neutron emission for more than 200 (quasi) spherical nuclei with Z = 18 - 52 and T1/2 < 5c within the factor of 2 and 3 correspondingly (Fig.1). A detailed comparison with modern self-consistent models: spherical RHB + RQRPA [3], deformed FAM [4] and HFB + QRPA [5] is performed. The“sudden shortening” of the β-decay half-lives found in RIKEN for the Ni isotopes crossing the major neutron shell at N=50 [6] are addressed (Fig.2). The performance of “beyond the QRPA models” in explaining beta-decay acceleration in the 78,79Ni is discussed. Supported by the grant of Russian Foundation for Basic Research (RFBR 18-02-00670).
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[2] I.N. Borzov., Phys. Rev. C67, 025802 (2003).
[3] T. Marketin, L. Huther, and G. Martinez-Pinedo, Phys. Rev. C 93,025805 (2016).
[4] M. T. Mustonen, T. Shafer, Z. Zenginerler, and J. Engel., Phys. Rev. C 90, 024308 (2014)
[5] K. Yoshida., Phys.Rev. C100, 024316 (2019).
[6] Z. Y. Xu et al., Phys. Rev. Lett. 113, 032505 (2014).
