Investigation of large α production in reactions involving weakly bound Li7

S. K. Pandit, A. Shrivastava, K. Mahata, V. V. Parkar, R. Palit, N. Keeley, P. C. Rout, A. Kumar, K. Ramachandran, S. Bhattacharyya, V. Nanal, C. S. Palshetkar, T. N. Nag, Shilpi Gupta, S. Biswas, S. Saha, J. Sethi, P. Singh, A. Chatterjee, and S. Kailas
Phys. Rev. C 96, 044616 – Published 19 October 2017

Abstract

The origin of the large α-particle production cross sections in systems involving weakly bound Li7 projectiles has been investigated by measuring the cross sections of all possible fragment-capture as well as complete fusion using the particle-γ coincidence, in-beam, and off-beam γ-ray counting techniques for the Li7+Nb93 system at near Coulomb barrier energies. Almost all of the inclusive α-particle yield has been accounted for. While the t-capture mechanism is found to be dominant (70%), compound nuclear evaporation and breakup processes contribute 15% each to the inclusive α-particle production in the measured energy range. Systematic behavior of the t capture and inclusive α cross sections for reactions involving Li7 over a wide mass range is also reported.

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  • Received 16 August 2017

DOI:https://doi.org/10.1103/PhysRevC.96.044616

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

S. K. Pandit1,2,*, A. Shrivastava1,2, K. Mahata1,2, V. V. Parkar1, R. Palit3, N. Keeley4, P. C. Rout1,2, A. Kumar1, K. Ramachandran1, S. Bhattacharyya5, V. Nanal3, C. S. Palshetkar3, T. N. Nag6, Shilpi Gupta1,2, S. Biswas3, S. Saha3, J. Sethi3, P. Singh3, A. Chatterjee1, and S. Kailas1

  • 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
  • 4National Centre for Nuclear Research, ul. Andrzeja Sołtana 7, 05-400 Otwock, Poland
  • 5Variable Energy Cyclotron Centre, Kolkata - 700064, India
  • 6Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai - 400085, India

  • *sanat@barc.gov.in

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Issue

Vol. 96, Iss. 4 — October 2017

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