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
Publication date
September 2015
DOI Publisher
Elsevier Journal
issn:0370-2693Abstract
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
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