Электронный каталог

Статья

Moiseev, N.S.
Empirical Systematics for Spontaneous Fission and *a-Decay Half-Lives / N.S.Moiseev, N.V.Antonenko, G.G.Adamian. – Text : electronic // Physical Review C. – 2026. – Vol. 113, No. 5. – P. 054608. – URL: https://doi.org/10.1103/b7cq-4z6q. – Bibliogr.: 99.

A systematic analysis of the relationship between spontaneous fission and 𝛼-decay half-lives is performed for actinides and superheavy nuclei in the ground state. The ratio of logarithmic half-lives exhibits regular trends with nuclear mass and charge numbers, showing almost constant behavior at fixed neutron excess. Based on these systematics, a new semiempirical formula is proposed that relates spontaneous fission half-lives to 𝛼-decay half-lives and neutron excess. The formula contains only three fitted parameters and provides a unified description for nuclei of different parities without introducing separate hindrance factors. It reproduces experimental spontaneous fission half-lives with a mean absolute deviation of 0.94 orders of magnitude for the dataset of 78 nuclei. A detailed comparison of the predicted half-lives calculated using microscopic-macroscopic and self-consistent microscopic models, more complex empirical parametrizations, and the new formula is presented. The formula can be used to predict spontaneous fission half-lives and validate experimental data, and it provides a criterion to determine the dominant decay mode (𝛼 decay or spontaneous fission). The existence of a fundamental relationship between spontaneous fission and 𝛼-decay processes is discussed.



ОИЯИ = ОИЯИ (JINR)2026
Спец.(статьи,препринты) = С 341.3г - Спонтанное деление