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Effects of weakly coupled channels on quasielastic barrier distributions

E. Piasecki L. Świderski W. Gawlikowicz J. Jastrzebski 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. Sillanpää S. Smirnov I. Strojek G. Tiourin W. H. Trzaska A. Trzcińska K. Hagino N. Rowley 1
1 IPNO - Institut de Physique Nucléaire d'Orsay
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 20Ne+90Zr, we have observed the barrier structures expected for the highly deformed neon projectile; however, for 20Ne+92Zr, 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.
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http://hal.in2p3.fr/in2p3-00441031
Contributor : Sophie Heurteau <>
Submitted on : Monday, December 14, 2009 - 2:57:02 PM
Last modification on : Wednesday, September 16, 2020 - 4:07:56 PM

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E. Piasecki, L. Świderski, W. Gawlikowicz, J. Jastrzebski, N. Keeley, et al.. Effects of weakly coupled channels on quasielastic barrier distributions. Physical Review C, American Physical Society, 2009, 80, 054613 (7 p.). ⟨10.1103/PhysRevC.80.054613⟩. ⟨in2p3-00441031⟩

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