"Bi-modal" isoscalar giant dipole strength in Ni-58

B. K. Nayak, U. Garg*, M. Hedden, M. Koss, T. Li, Y. Liu, P. V. Madhusudhana Rao, S. Zhu, M. Itoh, H. Sakaguchi, H. Takeda, M. Uchida, Y. Yasuda, M. Yosoi, H. Fujimura, M. Fujiwara, K. Hara, T. Kawabata, H. Akimune, M. N. Harakeh

*Corresponding author for this work

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    Abstract

    The strength distribution of the isoscalar giant dipole resonance (ISGDR) in Ni-58 has been obtained over the energy range 10.5-49.5 MeV via extreme forward angle scattering (including 0 degrees) of 386 MeV alpha particles. We observe a "bi-modal" El strength distribution for the first time in an A <90 nucleus. The observed ISGDR strength distribution is in reasonable agreement with the predictions of a recent RPA calculation. (c) 2006 Elsevier B.V. All rights reserved.

    Original languageEnglish
    Pages (from-to)43-47
    Number of pages5
    JournalPhysics Letters B
    Volume637
    Issue number1-2
    DOIs
    Publication statusPublished - 1-Jun-2006

    Keywords

    • EVEN-EVEN NUCLIDES
    • NUCLEAR INCOMPRESSIBILITY
    • SCATTERING
    • RESONANCE
    • PB-208
    • EXCITATION

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