Physics Letters B (Sep 2015)
Splitting of ISGMR strength in the light-mass nucleus 24Mg due to ground-state deformation
- Y.K. Gupta,
- U. Garg,
- J.T. Matta,
- D. Patel,
- T. Peach,
- J. Hoffman,
- K. Yoshida,
- M. Itoh,
- M. Fujiwara,
- K. Hara,
- H. Hashimoto,
- K. Nakanishi,
- M. Yosoi,
- H. Sakaguchi,
- S. Terashima,
- S. Kishi,
- T. Murakami,
- M. Uchida,
- Y. Yasuda,
- H. Akimune,
- T. Kawabata,
- M.N. Harakeh
Affiliations
- Y.K. Gupta
- Physics Department, University of Notre Dame, Notre Dame, IN 46556, USA
- U. Garg
- Physics Department, University of Notre Dame, Notre Dame, IN 46556, USA
- J.T. Matta
- Physics Department, University of Notre Dame, Notre Dame, IN 46556, USA
- D. Patel
- Physics Department, University of Notre Dame, Notre Dame, IN 46556, USA
- T. Peach
- Physics Department, University of Notre Dame, Notre Dame, IN 46556, USA
- J. Hoffman
- Physics Department, University of Notre Dame, Notre Dame, IN 46556, USA
- K. Yoshida
- Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
- M. Itoh
- Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
- M. Fujiwara
- Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
- K. Hara
- Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
- H. Hashimoto
- Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
- K. Nakanishi
- Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
- M. Yosoi
- Research Center for Nuclear Physics (RCNP), Osaka University, Osaka 567-0047, Japan
- H. Sakaguchi
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
- S. Terashima
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
- S. Kishi
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
- T. Murakami
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
- M. Uchida
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
- Y. Yasuda
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
- H. Akimune
- Department of Physics, Konan University, Hyogo 658-8501, Japan
- T. Kawabata
- Center for Nuclear Study, University of Tokyo, Wako, Saitama 351-0198, Japan
- M.N. Harakeh
- KVI-CART, University of Groningen, 9747 AA Groningen, The Netherlands
- DOI
- https://doi.org/10.1016/j.physletb.2015.07.021
- Journal volume & issue
-
Vol. 748,
no. C
pp. 343 – 346
Abstract
The isoscalar giant monopole resonance (ISGMR) strength distribution in 24Mg has been determined from background-free inelastic scattering of 386-MeV α particles at extreme forward angles, including 0∘. The ISGMR strength distribution has been observed for the first time to have a two-peak structure in a light-mass nucleus. This splitting of ISGMR strength is explained well by microscopic theory in terms of the prolate deformation of the ground state of 24Mg.
