"Bi-modal" isoscalar giant dipole strength in 58Ni
/ Authors
B. K. Nayak, U. Garg, M. Hedden, M. Koss, T. Li, Y. Liu, P. V. M. Rao, S. Zhu, M. Itoh, H. Sakaguchi
and 20 more authors
H. Takeda, M. Uchida, Y. Yasuda, M. Yosoi, H. Fujimura, M. Fujiwara, K. Hara, T. Kawabata, H. Akimune, M. Dame, Kyoto University, Japan., Rcnp, O. University, Cns, U. Tokyo, K. University, Kvi, U. Groningen, The Netherlands.
/ 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.
Journal: Physics Letters B