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  • "Bi-modal'' Isoscalar Giant Dipole Strength in \(^{58}\)Ni
    Nayak, B K; Garg, U; Hedden, M; Koss, M; T Li; Liu, Y; Rao, P V Madhusudhana; Zhu, S; Itoh, M; Sakaguchi, H; Takeda, H; Uchida, M; Yasuda, Y; Yosoi, M; Fujimura, H; Fujiwara, M; Hara, K; Kawabata, T; Akimune, H; Harakeh, M N

    arXiv.org, 01/2006
    Paper

    The strength distribution of the isoscalar giant dipole resonance (ISGDR) in \(^{58}\)Ni has been obtained over the energy range 10.5--49.5 MeV via extreme forward angle scattering (including 0\(^{\circ}\)) of 386 MeV \(\alpha\) particles. We observe a ``bi-modal'' \({E1}\) strength distribution for the first time in an A \(<\) 90 nucleus. The observed ISGDR strength distribution is in good agreement with the predictions of a recent QRPA calculation.

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