The empirical systematics of the probabilities {P{₋ₑ₀}} of long-range alpha-particle emission in spontaneous fission of heavy and superheavy nuclei is investigated. Known correlations of {P{₋ₑ₀}} with various parameters are analyzed. A new empirical formula for {P{₋ₑ₀}} as a linear function of the energy release {Q } of alpha decay is proposed. It is shown that consideration of {Q } reveals shell effects. All the considered models predict an increase in {P{₋ₑ₀}} up to 1% for neutron-deficient nuclei, highlighting the importance of this decay channel.
Moiseev et al. (Wed,) studied this question.