Deformation effects on isoscalar giant resonances in Mg 24

Y. K. Gupta; U. Garg; J. Hoffman; J. Matta; P. V.Madhusudhana Rao; D. Patel; T. Peach; 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:10.1103/PhysRevC.93.044324

Deformation effects on isoscalar giant resonances in Mg 24

Y. K. Gupta, U. Garg, J. Hoffman, J. Matta, P. V.Madhusudhana Rao, D. Patel, T. Peach, 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. YasudaH. Akimune, T. Kawabata, M. N. Harakeh

Cyclotron and Radioisotope Center (CYRIC)

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Strength distributions for isoscalar giant resonances with multipolarity L≤2 have been determined in Mg24 from "instrumental background-free" inelastic scattering of 386-MeV α particles at extreme forward angles, including 0. The isoscalar E0, E1, and E2 strengths are observed to be 57±7%, 111.1-7.2+10.9%, and 148.6±7.3%, respectively, of their energy-weighted sum rules in the excitation energy range of 6 to 35 MeV. The isoscalar giant monopole (ISGMR) and quadrupole (ISGQR) resonances exhibit a prominent K splitting which is consistent with microscopic theory for a prolate-deformed ground state of Mg24. For the ISGQR it is due to splitting of the three K components, whereas for the ISGMR it is due to its coupling to the K=0 component of the ISGQR. Deformation effects on the isoscalar giant dipole resonance are less pronounced, however.

Original language	English
Article number	044324
Journal	Physical Review C
Volume	93
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.93.044324
Publication status	Published - 2016 Apr 21

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Gupta, Y. K., Garg, U., Hoffman, J., Matta, J., Rao, P. V. M., Patel, D., Peach, T., Yoshida, K., Itoh, M., Fujiwara, M., Hara, K., Hashimoto, H., Nakanishi, K., Yosoi, M., Sakaguchi, H., Terashima, S., Kishi, S., Murakami, T., Uchida, M., ... Harakeh, M. N. (2016). Deformation effects on isoscalar giant resonances in Mg 24. Physical Review C, 93(4), [044324]. https://doi.org/10.1103/PhysRevC.93.044324

Deformation effects on isoscalar giant resonances in Mg 24. / Gupta, Y. K.; Garg, U.; Hoffman, J.; Matta, J.; Rao, P. V.Madhusudhana; Patel, D.; Peach, T.; 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, M. N.

In: Physical Review C, Vol. 93, No. 4, 044324, 21.04.2016.

Research output: Contribution to journal › Article › peer-review

Gupta, YK, Garg, U, Hoffman, J, Matta, J, Rao, PVM, Patel, D, Peach, T, 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 2016, 'Deformation effects on isoscalar giant resonances in Mg 24', Physical Review C, vol. 93, no. 4, 044324. https://doi.org/10.1103/PhysRevC.93.044324

Gupta, Y. K. ; Garg, U. ; Hoffman, J. ; Matta, J. ; Rao, P. V.Madhusudhana ; Patel, D. ; Peach, T. ; 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, M. N. / Deformation effects on isoscalar giant resonances in Mg 24. In: Physical Review C. 2016 ; Vol. 93, No. 4.

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abstract = "Strength distributions for isoscalar giant resonances with multipolarity L≤2 have been determined in Mg24 from {"}instrumental background-free{"} inelastic scattering of 386-MeV α particles at extreme forward angles, including 0. The isoscalar E0, E1, and E2 strengths are observed to be 57±7%, 111.1-7.2+10.9%, and 148.6±7.3%, respectively, of their energy-weighted sum rules in the excitation energy range of 6 to 35 MeV. The isoscalar giant monopole (ISGMR) and quadrupole (ISGQR) resonances exhibit a prominent K splitting which is consistent with microscopic theory for a prolate-deformed ground state of Mg24. For the ISGQR it is due to splitting of the three K components, whereas for the ISGMR it is due to its coupling to the K=0 component of the ISGQR. Deformation effects on the isoscalar giant dipole resonance are less pronounced, however.",

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AU - Gupta, Y. K.

AU - Garg, U.

AU - Hoffman, J.

AU - Matta, J.

AU - Rao, P. V.Madhusudhana

AU - Patel, D.

AU - Peach, T.

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 - 2016/4/21

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N2 - Strength distributions for isoscalar giant resonances with multipolarity L≤2 have been determined in Mg24 from "instrumental background-free" inelastic scattering of 386-MeV α particles at extreme forward angles, including 0. The isoscalar E0, E1, and E2 strengths are observed to be 57±7%, 111.1-7.2+10.9%, and 148.6±7.3%, respectively, of their energy-weighted sum rules in the excitation energy range of 6 to 35 MeV. The isoscalar giant monopole (ISGMR) and quadrupole (ISGQR) resonances exhibit a prominent K splitting which is consistent with microscopic theory for a prolate-deformed ground state of Mg24. For the ISGQR it is due to splitting of the three K components, whereas for the ISGMR it is due to its coupling to the K=0 component of the ISGQR. Deformation effects on the isoscalar giant dipole resonance are less pronounced, however.

AB - Strength distributions for isoscalar giant resonances with multipolarity L≤2 have been determined in Mg24 from "instrumental background-free" inelastic scattering of 386-MeV α particles at extreme forward angles, including 0. The isoscalar E0, E1, and E2 strengths are observed to be 57±7%, 111.1-7.2+10.9%, and 148.6±7.3%, respectively, of their energy-weighted sum rules in the excitation energy range of 6 to 35 MeV. The isoscalar giant monopole (ISGMR) and quadrupole (ISGQR) resonances exhibit a prominent K splitting which is consistent with microscopic theory for a prolate-deformed ground state of Mg24. For the ISGQR it is due to splitting of the three K components, whereas for the ISGMR it is due to its coupling to the K=0 component of the ISGQR. Deformation effects on the isoscalar giant dipole resonance are less pronounced, however.

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