Электронный каталог

Статья

Moiseev, N.S.
Empirical Systematics of Spontaneous Fission Half-Li ves of Heavy and Superheavy Nuclei / N.S.Moiseev, N.V.Antonenko, G.G.Adamian. – Text : electronic // Physical Review C. – 2025. – Vol. 112, No. 3. – P. 034607. – URL: https://doi.org/10.1103/qv5w-2c9g.

A new phenomenological approach is presented for predicting the spontaneous fission half-lives of actinides and superheavy nuclei. A linear correlation is found between the decimal logarithm of the spontaneous fission half-lives log&sub(10)⁡𝑇&sup(SF)&sub(1/2) and the energy release 𝑄&sub(𝛼) of alpha decay for nuclei with the same neutron excess 𝑁−𝑍 and atomic numbers in the range 90≤𝑍≤102. This correlation allows us to propose a semiempirical formula for predicting the spontaneous fission half-lives of even-even nuclei, taking into account both the 𝑄&sub(𝛼) and 𝑁−𝑍. The proposed formula is further extended to predict half-lives for odd-𝐴, odd-odd nuclei, and nuclei with 𝑍≥103. A detailed comparison of the predicted half-lives calculated using the microscopic-macroscopic and self-consistent microscopic models and the new semiempirical formula is given. The competition between alpha decay and spontaneous fission is analyzed. The existence of a fundamental relationship between spontaneous fission and alpha-decay processes is discussed.



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