Effects of weakly coupled channels on quasielastic barrier distributions

E. Piasecki, L. Świderski, W. Gawlikowicz, J. Jastrzȩbski, N. Keeley, M. Kisieliński, S. Kliczewski, A. Kordyasz, M. Kowalczyk, S. Khlebnikov, E. Koshchiy, E. Kozulin, T. Krogulski, T. Loktev, M. Mutterer, K. Piasecki, A. Piórkowska, K. Rusek, A. Staudt, M. SillanpääS. Smirnov, I. Strojek, G. Tiourin, W. H. Trzaska, A. Trzcińska, K. Hagino, N. Rowley

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

Heavy-ion collisions often produce fusion barrier distributions with structures displaying a fingerprint of couplings to highly collective excitations. Similar distributions can be obtained from large-angle quasielastic scattering, although in this case, the role of the many weak direct-reaction channels is unclear. For Ne20+Zr90, we have observed the barrier structures expected for the highly deformed neon projectile; however, for Ne20+Zr92, we find significant extra absorption into a large number of noncollective inelastic channels. This leads to smearing of the barrier distribution and a consequent reduction in the "resolving power" of the quasielastic method.

Original languageEnglish
Article number054613
JournalPhysical Review C - Nuclear Physics
Volume80
Issue number5
DOIs
Publication statusPublished - 2009 Nov 25

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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