Fusion-fission lifetimes of Rutherfordium (Rf) isotopes are studied within the dinuclear system framework for a wide range of projectile-target combinations under near-barrier fusion conditions. The calculations include excitation energy, angular momentum, macroscopic fission barriers, and shell correction effects. The dependence of fusion-fission lifetimes on angular momentum and center-of-mass energy is analyzed, showing a systematic decrease with increasing ℓ and Ecm due to enhanced rotational effects. Reactions involving more favorable entrance-channel mass asymmetry yield longer lifetimes, indicating increased compound-nucleus stability. Comparisons with available experimental data with the present work show qualitative agreement. The results emphasize the crucial role of entrance-channel dynamics in governing FF timescales in superheavy nucleus formation.
G.S. et al. (Wed,) studied this question.
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