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.
Effect of ground-state deformation on isoscalar giant resonances in Si 28 / T. Peach, U. Garg, Y.K. Gupta, J. Hoffman, J.T. Matta, D. Patel, P..V..M. Rao, K. Yoshida, M. Itoh, M. Fujiwara, K. Hara, H. Hashimoto, K. Nakanishi, M. Yosoi, H. Sakaguchi, S. Terashima, S. Kishi, T. Murakami, M. Uchida, Y. Yasuda, H. Akimune, T. Kawabata, M.N. Harakeh, G. Colò. - In: PHYSICAL REVIEW C. - ISSN 2469-9985. - 93:6(2016 Jun 29), pp. 064325.064325-1-064325.064325-8.
Effect of ground-state deformation on isoscalar giant resonances in Si 28
G. ColòUltimo
2016
Abstract
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.
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