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Isoscalar Giant Resonances in Highly-Deformed $^{172}$Yb

Fuente: arXiv

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Autori principali:	Khokhar, K., Bagchi, S., Niu, Y., Chen, C., Harakeh, M. N., Abdullah, M., Akimune, H., Das, D., Doi, T., Donaldson, L. M., Fujikawa, Y., Fujiwara, M., Furuno, T., Garg, U., Gupta, Y. K., Howard, K. B., Hijikata, Y., Inaba, K., Ishida, S., Itoh, M., Kalantar-Nayestanaki, N., Kar, D., Kawabata, T., Kawashima, S., Kitamura, K., Kobayashi, N., Matsuda, Y., Nakagawa, A., Nakamura, S., Nosaka, K., Okamoto, S., Ota, S., Pal, S., Roy, S., Weyhmiller, S., Yang, Z., Zamora, J. C.
Natura:	Preprint
Pubblicazione:	2025
Soggetti:	Nuclear Experiment Nuclear Theory
Accesso online:	Acceder al recurso
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_version_	1866912786538299392
author	Khokhar, K. Bagchi, S. Niu, Y. Chen, C. Harakeh, M. N. Abdullah, M. Akimune, H. Das, D. Doi, T. Donaldson, L. M. Fujikawa, Y. Fujiwara, M. Furuno, T. Garg, U. Gupta, Y. K. Howard, K. B. Hijikata, Y. Inaba, K. Ishida, S. Itoh, M. Kalantar-Nayestanaki, N. Kar, D. Kawabata, T. Kawashima, S. Kitamura, K. Kobayashi, N. Matsuda, Y. Nakagawa, A. Nakamura, S. Nosaka, K. Okamoto, S. Ota, S. Pal, S. Roy, S. Weyhmiller, S. Yang, Z. Zamora, J. C.
author_facet	Khokhar, K. Bagchi, S. Niu, Y. Chen, C. Harakeh, M. N. Abdullah, M. Akimune, H. Das, D. Doi, T. Donaldson, L. M. Fujikawa, Y. Fujiwara, M. Furuno, T. Garg, U. Gupta, Y. K. Howard, K. B. Hijikata, Y. Inaba, K. Ishida, S. Itoh, M. Kalantar-Nayestanaki, N. Kar, D. Kawabata, T. Kawashima, S. Kitamura, K. Kobayashi, N. Matsuda, Y. Nakagawa, A. Nakamura, S. Nosaka, K. Okamoto, S. Ota, S. Pal, S. Roy, S. Weyhmiller, S. Yang, Z. Zamora, J. C.
contents	To study the isoscalar giant resonances in a deformed case, background-free $α$-particle inelastic scattering measurements using a 386 MeV $α$ beam were performed on the highly-deformed $^{172}$Yb nucleus using the Grand Raiden spectrometer at the Research Center for Nuclear Physics (RCNP) at very forward angles, including $0^\circ$. The strength distributions for the isoscalar giant resonances up to $L \leq 3$ were obtained using multipole decomposition analysis. The isoscalar giant monopole resonance (ISGMR) strength exhibits a splitting into two components, interpreted as the coupling of the ISGMR with the $K=0$ component of the isoscalar giant quadrupole resonance (ISGQR). A \textit{bimodal} structure is observed in the strength distribution of the isoscalar giant dipole resonance. The ISGQR strength shows an enhancement near 25 MeV, attributed to the excitation of an overtone mode, while the broadening of the main-tone peak is associated with nuclear deformation. The experimental results are well reproduced by theoretical strength distributions calculated using the quasiparticle finite amplitude method for $L \leq 3$.
format	Preprint
id	arxiv_https___arxiv_org_abs_2512_20694
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Isoscalar Giant Resonances in Highly-Deformed $^{172}$Yb Khokhar, K. Bagchi, S. Niu, Y. Chen, C. Harakeh, M. N. Abdullah, M. Akimune, H. Das, D. Doi, T. Donaldson, L. M. Fujikawa, Y. Fujiwara, M. Furuno, T. Garg, U. Gupta, Y. K. Howard, K. B. Hijikata, Y. Inaba, K. Ishida, S. Itoh, M. Kalantar-Nayestanaki, N. Kar, D. Kawabata, T. Kawashima, S. Kitamura, K. Kobayashi, N. Matsuda, Y. Nakagawa, A. Nakamura, S. Nosaka, K. Okamoto, S. Ota, S. Pal, S. Roy, S. Weyhmiller, S. Yang, Z. Zamora, J. C. Nuclear Experiment Nuclear Theory To study the isoscalar giant resonances in a deformed case, background-free $α$-particle inelastic scattering measurements using a 386 MeV $α$ beam were performed on the highly-deformed $^{172}$Yb nucleus using the Grand Raiden spectrometer at the Research Center for Nuclear Physics (RCNP) at very forward angles, including $0^\circ$. The strength distributions for the isoscalar giant resonances up to $L \leq 3$ were obtained using multipole decomposition analysis. The isoscalar giant monopole resonance (ISGMR) strength exhibits a splitting into two components, interpreted as the coupling of the ISGMR with the $K=0$ component of the isoscalar giant quadrupole resonance (ISGQR). A \textit{bimodal} structure is observed in the strength distribution of the isoscalar giant dipole resonance. The ISGQR strength shows an enhancement near 25 MeV, attributed to the excitation of an overtone mode, while the broadening of the main-tone peak is associated with nuclear deformation. The experimental results are well reproduced by theoretical strength distributions calculated using the quasiparticle finite amplitude method for $L \leq 3$.
title	Isoscalar Giant Resonances in Highly-Deformed $^{172}$Yb
topic	Nuclear Experiment Nuclear Theory
url	https://arxiv.org/abs/2512.20694