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26 April 2024

» arxiv » 1602.7095

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Evolution of fusion hindrance for asymmetric systems at deep sub barrier energies
A. Shrivastavaa ; K. Mahata ; S.K. Pandit ; V. Nanal ; T. Ichikawa ; K. Hagino ; A. Navin ; C.S. Palshetkar ; V.V. Parkar ; K. Ramachandran ; P.C. Rout ; Abhinav Kumar ; A. Chatterjee ; S. Kailas ;
Date:	23 Feb 2016
Abstract:	Measurements of fusion cross-sections of 7Li and 12C with 198Pt at deep sub-barrier energies are reported to unravel the role of the entrance channel in the occurrence of fusion hindrance. The onset of fusion hindrance has been clearly observed in 12C + 198Pt system but not in 7Li + 198Pt system, within the measured energy range. Emergence of the hindrance, moving from lighter (6,7Li) to heavier (12C,16O) projectiles is explained employing a model that considers a gradual transition from a sudden to adiabatic regime at low energies. The model calculation reveals a weak effect of the damping of coupling to collective motion for the present systems as compared to that obtained for systems with heavier projectiles.
Source:	arXiv, 1602.7095
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