2009/09/12 by Takatoshi Ichikawa, Kouichi Hagino, K. Hagino +1 · 94 citations
Physics and Astronomy · #Adiabatic process #Atomic and Molecular Physics #Atomic physics #Coupling (piping) #Diagonal #Extension (predicate logic) #Fusion #Heavy ion #Ion #Materials science #Nuclear physics research studies #Nuclear reaction #Order (exchange) #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #nucl-th
paper · pdf · doi:10.1103/physrevlett.103.202701
published in Physical Review Letters 103(20), 202701 (American Physical Society) · 4 pages, 4 figures
arxiv created 2009/09/12 · openalex publication_date 2009/11/11 · arxiv updated 2015/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We propose a novel extension of the standard coupled-channels framework for heavy-ion reactions in order to analyze fusion reactions at deep-sub-barrier incident energies. This extension simulates a smooth transition between the two-body and the adiabatic one-body states. To this end, we damp gradually the off-diagonal part of the coupling potential, for which the position of the onset of the damping varies for each eigenchannel. We show that this model accounts well for the steep falloff of the fusion cross sections for the (16)O + (208)Pb, (64)Ni + (64)Ni, and (58)Ni + (58)Ni reactions.