Effect of ground-state deformation on isoscalar giant resonances in Si28

Jun 29, 2016
8 pages
Published in:
  • Phys.Rev.C 93 (2016) 6, 064325
  • Published: Jun 29, 2016

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Abstract: (APS)
Multipole strength distributions for isoscalar L≤2 transitions in Si28 have been extracted using 386-MeV inelastic α scattering at extremely forward angles, including 0∘. Observed strength distributions are in good agreement with microscopic calculations for an oblate-deformed ground state. In particular, a large peak at an excitation energy of 17.7 MeV in the isoscalar giant monopole resonance strength is consistent with the calculations.