Quasi-elastic scattering in the 20Ne+90,92Zr reactions: Role of noncollective excitations

S. Yusa, K. Hagino, N. Rowley

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9 Citations (Scopus)

Abstract

Conventional coupled-channels analyses, that take account of only the collective excitations of the colliding nuclei, have failed to reproduce the different behavior of the experimental quasi-elastic barrier distributions for the 20Ne+90,92Zr systems. To clarify the origins of this difference, we investigate the effect of noncollective excitations of the Zr isotopes. Describing these excitations in a random-matrix model, we explicitly take them into account in our coupled-channels calculations. The noncollective excitations are capable of reproducing the observed smearing of the peak structure in the barrier distribution for 20Ne+92Zr, while not significantly altering the structure observed in the 20Ne+90Zr system. The difference is essentially related to the closed neutron shell in 90Zr.

Original languageEnglish
Article number054621
JournalPhysical Review C - Nuclear Physics
Volume88
Issue number5
DOIs
Publication statusPublished - 2013 Nov 27

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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