Fusion reaction studies for the Li6+Sn124 system at near-barrier energies

V. V. Parkar, S. K. Pandit, A. Shrivastava, R. Palit, K. Mahata, V. Jha, K. Ramachandran, Shilpi Gupta, S. Santra, Sushil K. Sharma, S. Upadhyaya, T. N. Nag, Sutanu Bhattacharya, T. Trivedi, and S. Kailas
Phys. Rev. C 98, 014601 – Published 3 July 2018

Abstract

The complete and incomplete fusion along with one neutron stripping and pickup cross sections for the Li6+Sn124 system are measured using online and offline characteristic γ-ray detection techniques. The complete fusion (CF) cross sections at energies above the Coulomb barrier are found to be suppressed by 34% compared to the coupled channel calculations. This suppression observed in complete fusion cross sections is found to be commensurate with the measured total incomplete fusion (ICF) cross sections. There is a distinct feature observed in the ICF cross sections, i.e., d capture is found to be dominant than α capture at all the measured energies, contrary to the data available for Li6+Bi209,Au197 systems. The total fusion cross section ratio between Li6 and Li7 induced reactions shows an increasing trend as the energy decreases below the barrier while it remains unity at above-barrier energies. A simultaneous explanation of complete, incomplete, and total fusion (TF) data is also obtained from the calculations based on the continuum discretized coupled channel method with short-range imaginary potentials. The cross section ratios of CF/TF and ICF/TF obtained from the data as well as the calculations shows the dominance of ICF at below-barrier energies and CF at above-barrier energies.

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  • Received 9 April 2018

DOI:https://doi.org/10.1103/PhysRevC.98.014601

©2018 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

V. V. Parkar1,*, S. K. Pandit1,2, A. Shrivastava1,2, R. Palit3, K. Mahata1,2, V. Jha1,2, K. Ramachandran1, Shilpi Gupta1,2, S. Santra1,2, Sushil K. Sharma3,†, S. Upadhyaya4,†, T. N. Nag5, Sutanu Bhattacharya6, T. Trivedi6, and S. Kailas1,7

  • 1Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
  • 2Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
  • 3Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400005, India
  • 4Department of Applied Physics, Amity University, Noida 201313, India
  • 5Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India
  • 6Department of Pure and Applied Physics, Guru Ghasidas Vishwavidyalaya, Bilaspur 495009, India
  • 7UM-DAE Centre for Excellence in Basic Sciences, Mumbai 400098, India

  • *vparkar@barc.gov.in
  • Present address: The Marian Smoluchowski Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland.

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Vol. 98, Iss. 1 — July 2018

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