"Bi-modal'' Isoscalar Giant Dipole Strength in $^{58}$Ni
  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. 
B.K. Nayak (1), U. Garg (1), M. Hedden (1), M. Koss (1), T. Li (1), Y.   Liu (1), P.V. Madhusudhana Rao (1), S. Zhu (1), M. ...