Phys. Rev. C 65, 014614 (2001) [9 pages]

Isotopic dependence and channel coupling effects in the fusion of ¹⁶O+^112,116Sn and ³²S+^112,116,120Sn at energies around the barrier

Abstract

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Citing Articles (9)

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Vandana Tripathi^*, Lagy T. Baby^†, J. J. Das, P. Sugathan, N. Madhavan, and A. K. Sinha^‡
Nuclear Science Centre, New Delhi 110 067, India

P. V. Madhusudhana Rao
Department of Nuclear Physics, Andhra University, Visakhapatnam 530 003, India

S. K. Hui^§
Department of Physics, Calcutta University, Calcutta 700 075, India

R. Singh
Department of Physics and Astronomy, Delhi University, New Delhi 110 007, India

K. Hagino
Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan

Received 11 July 2001; published 21 December 2001

We report here measurements of fusion cross-sections for the ¹⁶O+^112,116Sn and ³²S+^112,116,120Sn systems. The set of systems studied with widely varying ground state Q values for the transfer of neutrons is a good case to understand the influence of single and multineutron transfer on the fusion process. The evaporation residue cross-sections were measured in small energy steps covering the region around the Coulomb barrier (≈0.8V_b to 1.2V_b). The data have been analyzed in the framework of a coupled-channels formalism using the coupled-channels code CCFULL. A comparative study of the ¹⁶O+^ASn and ³²S+^ASn systems suggests that the fusion process is predominantly influenced by coupling to collective excitations with coupling to multiphonon states (of target and projectile) becoming increasingly important for heavier systems. From the present analysis an unambiguous signature of the role of coupling to neutron transfer channels could not be inferred.

URL:

http://link.aps.org/doi/10.1103/PhysRevC.65.014614

DOI:

10.1103/PhysRevC.65.014614

PACS:

25.70.Jj, 24.10.Eq

^*Present address: Nuclear Physics Division, Bhabha Atomic Research Center, Mumbai-400 085, India.

^†Present address: Department of Particle Physics, Weizmann Institute of Science, Rehovot 76100, Israel.

^‡Present address: IUC-DAEF-CC, LB-8/III, Salt Lake, Kolkata 700 098, India.

^§Present address: Applied Nuclear Physics Group, Purdue University, West Lafayette, IN 47907.

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Phys. Rev. C 65, 014614 (2001) [9 pages]

Isotopic dependence and channel coupling effects in the fusion of 16O+112,116Sn and 32S+112,116,120Sn at energies around the barrier

Isotopic dependence and channel coupling effects in the fusion of ¹⁶O+^112,116Sn and ³²S+^112,116,120Sn at energies around the barrier