corner
corner

Phys. Rev. C 69, 051301(R) (2004) [5 pages]

Systematics of the bimodal isoscalar giant dipole resonance

Download: PDF (73 kB) Buy this article Export: BibTeX or EndNote (RIS)

M. Uchida1,*, H. Sakaguchi1, M. Itoh1,†, M. Yosoi1, T. Kawabata1,‡, Y. Yasuda1, H. Takeda1, T. Murakami1, S. Terashima1, S. Kishi1, U. Garg2, P. Boutachkov2, M. Hedden2, B. Kharraja2, M. Koss2, B. K. Nayak2, S. Zhu2, M. Fujiwara3,4, H. Fujimura3, H. P. Yoshida3, K. Hara3, H. Akimune5, and M. N. Harakeh6
1Department of Physics, Kyoto University, Kyoto 606-8502, Japan
2Physics Department, University of Notre Dame, Notre Dame, Indiana 46556, USA
3Research Center for Nuclear Physics, Osaka University, Osaka 567-0047, Japan
4Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai 319-1195, Japan
5Department of Physics, Konan University, Kobe 658-8501, Japan
6Kernfysisch Versneller Instituut, 9747 AA Groningen, The Netherlands

Received 21 January 2004; published 17 May 2004

The systematic behavior of the isoscalar giant dipole resonance (ISGDR) in 90Zr, 116Sn, 144Sm, and 208Pb is studied with inelastic α scattering at Eα=386 MeV. Multipole-decomposition analysis is applied to extract the excitation strengths of giant resonances from the (α,α) differential cross sections at θlab=0.64°–13.5°. The bimodal structure of the ISGDR is discussed and compared with recent theoretical results from Hartree‐Fock+random‐phase‐approximation calculations.

© 2004 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.69.051301
DOI:
10.1103/PhysRevC.69.051301
PACS:
24.30.Cz, 21.65.+f, 24.50.+g

*Present address: Research Center for Nuclear Physics, Osaka University, Osaka 567-0047, Japan.

Present address: Research Center for Nuclear Physics, Osaka University, Osaka 567-0047, Japan.

Present address: Center for Nuclear Study (CNS), Graduate School of Science, University of Tokyo, Wako 351-0198, Japan.