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Elsevier, Physics Letters B, (748), p. 343-346, 2015

DOI: 10.1016/j.physletb.2015.07.021

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Splitting of ISGMR strength in the light-mass nucleus 24 Mg due to ground-state deformation

Journal article published in 2015 by 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 and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The isoscalar giant monopole resonance (ISGMR) strength distribution in $^{24}$Mg 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 $^{24}$Mg. ; Comment: 5 pages, 4 figures; to be published in Phys. Lett. B