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Piasecki, E.; Świderski, Ł.; Gawlikowicz, W.; Jastrzębski, J.; Keeley, N.; Kisieliński, M.; Kliczewski, S.; Kordyasz, A.; Kowalczyk, M.; Khlebnikov, S.; Koshchiy, E.; Kozulin, E.; Krogulski, T.; Loktev, T.; Mutterer, M.; Piasecki, K.; Piórkowska, A.; Rusek, K.; Staudt, A.; Sillanpää, M.; Smirnov, S.; Strojek, I.; Tiourin, G.; Trzaska, W. H.; Trzcińska, A.; Hagino, K.; Rowley, N.
Physical review. C, Nuclear physics, 11/2009, Volume: 80, Issue: 5Journal Article
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 {sup 20}Ne+{sup 90}Zr, we have observed the barrier structures expected for the highly deformed neon projectile; however, for {sup 20}Ne+{sup 92}Zr, 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.
