Isoscalar giant resonances in the Sn nuclei and implications for the asymmetry term in the nuclear-matter incompressibility

T. Li, U. Garg, Y. Liu, R. Marks, B. K. Nayak, P. V. Madhusudhana Rao, M. Fujiwara, H. Hashimoto, K. Nakanishi, S. Okumura, M. Yosoi, M. Ichikawa, M. Itoh, R. Matsuo, T. Terazono, M. Uchida, Y. Iwao, T. Kawabata, T. Murakami, H. SakaguchiS. Terashima, Y. Yasuda, J. Zenihiro, H. Akimune, K. Kawase, M. N. Harakeh

Research output: Contribution to journalArticle

94 Citations (Scopus)

Abstract

We have investigated the isoscalar giant resonances in the Sn isotopes using inelastic scattering of 386-MeV α particles at extremely forward angles, including 0°. We have obtained completely "background-free" inelastic-scattering spectra for the Sn isotopes over the angular range 0°-9° and up to an excitation energy of 31.5 MeV. The strength distributions for various multipoles were extracted by a multipole decomposition analysis based on the expected angular distributions of the respective multipoles. We find that the centroid energies of the isoscalar giant monopole resonance (ISGMR) in the Sn isotopes are significantly lower than the theoretical predictions. In addition, based on the ISGMR results, a value of Kτ=-550±100 MeV is obtained for the asymmetry term in the nuclear incompressibility. Constraints on interactions employed in nuclear structure calculations are discussed on the basis of the experimentally obtained values for K and Kτ.

Original languageEnglish
Article number034309
JournalPhysical Review C - Nuclear Physics
Volume81
Issue number3
DOIs
Publication statusPublished - 2010 Mar 22

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'Isoscalar giant resonances in the Sn nuclei and implications for the asymmetry term in the nuclear-matter incompressibility'. Together they form a unique fingerprint.

  • Cite this

    Li, T., Garg, U., Liu, Y., Marks, R., Nayak, B. K., Madhusudhana Rao, P. V., Fujiwara, M., Hashimoto, H., Nakanishi, K., Okumura, S., Yosoi, M., Ichikawa, M., Itoh, M., Matsuo, R., Terazono, T., Uchida, M., Iwao, Y., Kawabata, T., Murakami, T., ... Harakeh, M. N. (2010). Isoscalar giant resonances in the Sn nuclei and implications for the asymmetry term in the nuclear-matter incompressibility. Physical Review C - Nuclear Physics, 81(3), [034309]. https://doi.org/10.1103/PhysRevC.81.034309