Influence of single-neutron stripping on near-barrier He6+Pb208 and He8+Pb208 elastic scattering

G. Marquínez-Durán, N. Keeley, K. W. Kemper, R. S. Mackintosh, I. Martel, K. Rusek, and A. M. Sánchez-Benítez
Phys. Rev. C 95, 024602 – Published 2 February 2017

Abstract

The influence of single-neutron stripping on the near-barrier elastic scattering angular distributions for the He6,8+Pb208 systems is investigated through coupled reaction channels (CRC) calculations fitting recently published data to explore the differences in the absorptive potential found in the scattering of these two neutron-rich nuclei. The inclusion of the coupling reduces the elastic cross section in the Coulomb-nuclear interference region for He8 scattering, whereas for He6 its major impact is on the large-angle elastic scattering. The real and imaginary dynamic polarization potentials are obtained by inverting the CRC elastic scattering S-matrix elements. These show that the main absorptive features occur between 11 and 12 fm for both projectiles, while the attractive features are separated by about 1 fm, with their main structures occurring at 10.5 fm for He6 and 11.5 fm for He8.

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  • Received 14 December 2016

DOI:https://doi.org/10.1103/PhysRevC.95.024602

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

G. Marquínez-Durán1, N. Keeley2,*, K. W. Kemper3, R. S. Mackintosh4, I. Martel1, K. Rusek5, and A. M. Sánchez-Benítez1

  • 1Departamento de Ciencias Integradas, Facultad de Ciencias Experimentales, Campus de El Carmen, Universidad de Huelva, 21071 Huelva, Spain
  • 2National Centre for Nuclear Research, ulica Andrzeja Sołtana 7, 05-400 Otwock, Poland
  • 3Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
  • 4School of Physical Sciences, The Open University, Milton Keynes MK7 6AA, United Kingdom
  • 5Heavy Ion Laboratory, University of Warsaw, Warsaw, Poland

  • *nicholas.keeley@ncbj.gov.pl

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Vol. 95, Iss. 2 — February 2017

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