Evidence for isovector giant resonances at 2ħω via the (7Li,7Be) reactions on C12 and Si28

S. Nakayama, T. Yamagata, M. Tanaka, M. Inoue, K. Yuasa, T. Itahashi, H. Ogata, N. Koori, K. Shima, and M. B. Greenfield
Phys. Rev. C 46, 1667 – Published 1 November 1992
PDFExport Citation

Abstract

We identify two electric isovector giant resonances at Ex=28 and 33 MeV in C12, and at Ex=27 and 31 MeV in Si28, distinguishing them from a continuum background in the (7Li,7Be) reaction at EL=26 MeV/nucleon and θL=0°. The shape of the underlying continuum is determined from a comparison of ΔS=0 and ΔS=1 energy spectra deduced with a γ7 coincidence method. The excitation energies of these resonances are consistent with those of the isovector giant quadrupole and monopole resonances previously observed by the electron scattering and the (π±,π0) reaction, respectively, though the widths presently observed are much narrower.

  • Received 25 February 1992

DOI:https://doi.org/10.1103/PhysRevC.46.1667

©1992 American Physical Society

Authors & Affiliations

S. Nakayama, T. Yamagata, M. Tanaka, M. Inoue, K. Yuasa, T. Itahashi, H. Ogata, N. Koori, K. Shima, and M. B. Greenfield

  • College of General Education, University of Tokushima, Tokushima 770, Japan
  • Department of Physics, Konan University, Higashinada, Kobe 658, Japan
  • Kobe Tokiwa Junior College, Nagata, Kobe 653, Japan
  • Institute for Chemical Research, Kyoto University, Uji, Kyoto 611, Japan
  • Research Center for Nuclear Physics, Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka 567, Japan
  • International Christian University, Mitaka, Tokyo 181, Japan

References (Subscription Required)

Click to Expand
Issue

Vol. 46, Iss. 5 — November 1992

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×