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

doi:10.1016/j.physletb.2015.07.021

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. AkimuneT. Kawabata, M. N. Harakeh

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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^{{ring operator}}. 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.

Original language	English
Pages (from-to)	343-346
Number of pages	4
Journal	Physics Letters B
Volume	748
DOIs	https://doi.org/10.1016/j.physletb.2015.07.021
State	Published - Sep 2 2015
Externally published	Yes

Funding

The authors acknowledge the efforts of the staff of the RCNP Ring Cyclotron Facility in providing a high-quality, halo-free α-particle beam required for the challenging measurements reported in this paper. Discussions with Prof. G. Colò on the theoretical aspects of this work are also gratefully acknowledged. This work has been supported in part by the U.S. National Science Foundation (Grant Numbers INT-9910015 , PHY04-57120, and PHY-1419765 ), and by the JSPS KAKENHI (Grant Numbers 23740223 and 25287065 ). The numerical calculations were performed on SR16000 at the Yukawa Institute for Theoretical Physics, Kyoto University.

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Gupta, Y. K., Garg, U., Matta, J. T., Patel, D., Peach, T., Hoffman, J., Yoshida, K., Itoh, M., Fujiwara, M., Hara, K., Hashimoto, H., Nakanishi, K., Yosoi, M., Sakaguchi, H., Terashima, S., Kishi, S., Murakami, T., Uchida, M., Yasuda, Y., ... Harakeh, M. N. (2015). Splitting of ISGMR strength in the light-mass nucleus ²⁴Mg due to ground-state deformation. Physics Letters B, 748, 343-346. https://doi.org/10.1016/j.physletb.2015.07.021

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

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{ring operator}. 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.",

author = "Gupta, {Y. K.} and U. Garg and Matta, {J. T.} and D. Patel and T. Peach and J. Hoffman and K. Yoshida and M. Itoh and M. Fujiwara and K. Hara and H. Hashimoto and K. Nakanishi and M. Yosoi and H. Sakaguchi and S. Terashima and S. Kishi and T. Murakami and M. Uchida and Y. Yasuda and H. Akimune and T. Kawabata and Harakeh, {M. N.}",

note = "Publisher Copyright: {\textcopyright} 2015 The Authors.",

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doi = "10.1016/j.physletb.2015.07.021",

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Gupta, YK, Garg, U, Matta, JT, Patel, D, Peach, T, Hoffman, J, Yoshida, K, Itoh, M, Fujiwara, M, Hara, K, Hashimoto, H, Nakanishi, K, Yosoi, M, Sakaguchi, H, Terashima, S, Kishi, S, Murakami, T, Uchida, M, Yasuda, Y, Akimune, H, Kawabata, T & Harakeh, MN 2015, 'Splitting of ISGMR strength in the light-mass nucleus ²⁴Mg due to ground-state deformation', Physics Letters B, vol. 748, pp. 343-346. https://doi.org/10.1016/j.physletb.2015.07.021

TY - JOUR

T1 - Splitting of ISGMR strength in the light-mass nucleus 24Mg due to ground-state deformation

AU - Gupta, Y. K.

AU - Garg, U.

AU - Matta, J. T.

AU - Patel, D.

AU - Peach, T.

AU - Hoffman, J.

AU - Yoshida, K.

AU - Itoh, M.

AU - Fujiwara, M.

AU - Hara, K.

AU - Hashimoto, H.

AU - Nakanishi, K.

AU - Yosoi, M.

AU - Sakaguchi, H.

AU - Terashima, S.

AU - Kishi, S.

AU - Murakami, T.

AU - Uchida, M.

AU - Yasuda, Y.

AU - Akimune, H.

AU - Kawabata, T.

AU - Harakeh, M. N.

PY - 2015/9/2

Y1 - 2015/9/2

N2 - 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{ring operator}. 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.

AB - 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{ring operator}. 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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U2 - 10.1016/j.physletb.2015.07.021

DO - 10.1016/j.physletb.2015.07.021

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AN - SCOPUS:84937849007

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VL - 748

SP - 343

EP - 346

JO - Physics Letters B

JF - Physics Letters B

ER -

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

Abstract

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