Evolution of fusion hindrance for asymmetric systems at deep sub-barrier energies

A. Shrivastava, 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

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

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 C12+Pt198 system but not in Li7+Pt198 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.

Original languageEnglish
Pages (from-to)332-336
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume755
DOIs
Publication statusPublished - 2016 Apr 10
Externally publishedYes

Keywords

  • Adiabatic model
  • Coupled channels calculations
  • Deep sub-barrier energies
  • Fusion cross sections

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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