Phys.Rev. C 97, 034319 (2018)

K.Pomorski, B.Nerlo-Pomorska, J.Bartel, C.Schmitt

Stability of superheavy nuclei

NUCLEAR STRUCTURE ²⁸⁰Ds, ²⁷⁶Cn, ^268,270,272Hs, ^264,266,268Sg, ^{258,260,262,264}Rf, ^254,256,258Fm, ²⁵²Cf; calculated deformation energy surfaces in (q₂, q₃), (q₃, q₄), (q₂, η) and (q₄, η) planes. Z=94-126, N-Z=42-72; calculated values of the collective coordinates η, q₂, q₃ and q₄ at equilibrium deformation, ground-state microscopic contribution to the potential energy, fission barrier heights. Comparison to available experimental data. Four-dimensional Fourier parametrization of nuclear shapes, combined with the macroscopic-microscopic approach of the potential energy based on the Lublin-Strasbourg drop and microscopic shell and pairing corrections.

RADIOACTIVITY ^{230,232,234,236,238,240,242,244,246,248,250,252,254,256,258}Pu, ^{232,234,236,238,240,242,244,246,248,250,252,254,256,258,260,262}Cm, ^{238,240,242,244,246,248,250,252,254,256,258,260,262,264,266}Cf, ^{242,244,246,248,250,252,254,256,258,260,262,264,266,268,270}Fm, ^{246,248,250,252,254,256,258,260,262,264,266,268,270,272,274}No, ^{250,252,254,256,258,260,262,264,266,268,270,272,274,276,278}Rf, ^{254,256,258,260,262,264,266,268,270,272,274,276,278,280,282}Sg, ^{258,260,262,264,266,268,270,272,274,276,278,280,282,284,286}Hs, ^{262,264,266,268,270,272,274,276,278,280,282,284,286,288,290}Ds, ^{266,268,270,272,274,276,278,280,282,284,286,288,290,292,294}Cn, ^{270,272,274,276,278,280,282,284,286,288,290,292,294,296,298}Fl, ^{274,276,278,280,282,284,286,288,290,292,294,296,298,300,302}Lv, ^{278,280,282,284,286,288,290,292,294,296,298,300,302,304,306}Og, ^{282,284,286,288,290,292,294,296,298,300,302,304,306,308,310}120, ^{286,288,290,292,294,296,298,300,302,304,306,308,310,312,314}122, ^{290,292,294,296,298,300,302,304,306,308,310,312,314,316,318}124(α); calculated Q(α) and α-decay half-lives using Gamow-type WKB approach, and compared with available experimental data.

doi: 10.1103/PhysRevC.97.034319