Proton decay from the isoscalar giant dipole resonance in Ni58

M. Hunyadi, H. Hashimoto, T. Li, H. Akimune, H. Fujimura, M. Fujiwara, Z. Gácsi, U. Garg, K. Hara, M. N. Harakeh, J. Hoffman, M. Itoh, T. Murakami, K. Nakanishi, B. K. Nayak, S. Okumura, H. Sakaguchi, S. Terashima, M. Uchida, Y. YasudaM. Yosoi

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6 Citations (Scopus)


Proton decay from the 3 □ ω isoscalar giant dipole resonance (ISGDR) in Ni58 has been measured using the (α,α'p) reaction at a bombarding energy of 386MeV to investigate its decay properties. We have extracted the ISGDR strength under the coincidence condition between inelastically scattered α particles at forward angles and decay protons emitted at backward angles. Branching ratios for proton decay to low-lying states of Co57 have been determined, and the results compared with predictions of recent continuum-RPA calculations. The final-state spectra of protons decaying to the low-lying states in Co57 were analyzed for a more detailed understanding of the structure of the ISGDR. It is found that there are differences in the structure of the ISGDR as a function of excitation energy.

Original languageEnglish
Article number044317
JournalPhysical Review C - Nuclear Physics
Issue number4
Publication statusPublished - 2009 Oct 15


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