Theoretical and experimental αdecay half-lives of the heaviest odd-Z elements and general predictions

Abstract

Theoretical decay half-lives of the heaviest odd-Z nuclei are calculated using the experimental Q value. The barriers in the quasimolecular shape path are determined within a Generalized Liquid Drop Model (GLDM) and the WKB approximation is used. The results are compared with calculations using the Density-Dependent M3Y (DDM3Y) effective interaction and the Viola-Seaborg-Sobiczewski (VSS) formulas. The calculations provide consistent estimates for the half-lives of the decay chains of these superheavy elements. The experimental data stand between the GLDM calculations and VSS ones in the most time. Predictions are provided for the decay half-lives of other superheavy nuclei within the GLDM and VSS approaches using the recent extrapolated Q of Audi, Wapstra, and Thibault [Nucl. Phys. A729, 337 (2003)], which may be used for future experimental assignment and identification.

References in corpus (3)

• alpha decay half-lives of new superheavy nuclei within a generalized liquid drop model
• Alpha decay chains from element 113
• Alpha-decay chains of ${}_{173}^{288}115$ and ${}_{172}^{287}115$ in the Relativistic Mean Field theory

Cited by in corpus (7)

• $\alpha$ particle preformation in heavy nuclei and penetration probability
• Recent $\alpha$ decay half-lives and analytic expression predictions including superheavy nuclei
• Search for long lived heaviest nuclei beyond the valley of stability
• Feasibility of observing the α decay chains from isotopes of SHN with Z = 128, Z = 126, Z = 124 and Z = 122
• Stability against $\alpha$ decay of some recently observed superheavy elements
• Predictions on the alpha decay chains of superheavy nuclei with Z =121 within the range 290 $\le$ A $\le$ 339
• Alpha decay favoured isotopes of some superheavy nuclei: Spontaneous fission versus alpha decay