Properties of Z=114 super-heavy nuclei

• Published in: Nuclear science and techniques Vol. 32; no. 6; pp. 74 - 83
• Main Authors: Xin, Yu-Qi, Ma, Na-Na, Deng, Jun-Gang, Zhao, Tian-Liang, Zhang, Hong-Fei
• Format: Journal Article
• Language: English
• Published: Singapore Springer Singapore 01.06.2021; Joint Department for Nuclear Physics,Institute of Modern Physics,CAS and Lanzhou University,Lanzhou 730000,China; Engineering Research Center for Neutron Application,Ministry of Education,Lanzhou University,Lanzhou 730000,China; School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China%School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China
• Subjects: Energy; Hadrons; Heavy Ions; Nuclear Energy; Nuclear Physics; decay; Super-heavy nuclei; Single-particle level; Separation energy; α decay
• ISSN: 1001-8042; 2210-3147
• DOI: 10.1007/s41365-021-00899-7

The center of the stability island of super-heavy nuclei (SHN) is the subject of intense experimental and theoretical investigations and has potential technological applications. 114 298 Fl lies in the Z = 114 isotopic chain as a persuasive candidate of the spherical double-magic nucleus in SHN, and in this study, the calculations of nuclear binding energies, one-nucleon and two-nucleon separation energies, α -decay energies, and the corresponding half-lives provide strong evidence for this point. These calculations within an improved Weizsäcker-Skyrme nuclear mass model (WS*) were performed and compared with the calculations of the finite-range droplet model (FRDM2012) and experimental data for Z = 114 isotopes and N = 184 isotones. Concurrently, the corresponding single-particle levels in a Woods-Saxon potential well with a spin-orbit term are calculated, which can be used as a powerful indicator to identify the shell effects existing in 114 298 Fl. Both the study of the properties of the isotopic chain and microphysical quantities provide a vital signal that 114 298 Fl is a spherical double-magic nucleus and also the center of the SHN.