Onset of nuclear structure effects in near-barrier elastic scattering of weakly bound nuclei: He-6 and Li-6 compared

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Kucuk Y., Boztosun I., Keeley N.

PHYSICAL REVIEW C, cilt.79, sa.6, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 79 Sayı: 6
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1103/physrevc.79.067601
  • Dergi Adı: PHYSICAL REVIEW C
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Akdeniz Üniversitesi Adresli: Hayır

Özet

The elastic scattering of the halo nucleus He-6 from heavy targets at incident energies near the Coulomb barrier displays a marked deviation from the standard Fresnel-type diffraction behavior. This deviation is due to the strong Coulomb dipole breakup coupling produced by the Coulomb field of the heavy target, a specific feature of the nuclear structure of He-6. We have performed Continuum Discretized Coupled Channels calculations for the elastic scattering of He-6 and Li-6 from Ni-58, Sn-120, Sm-144, Ta-181 and Pb-208 targets in order to determine the range of Z(T) where this nuclear-structure specific coupling effect becomes manifest. We find that the strong Coulomb dipole breakup coupling effect is only clearly experimentally distinguishable for targets of Z(T)approximate to 80.

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