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arXiv · 2407.05685

Effect of ground-state deformation on the Isoscalar Giant Monopole Resonance and the first observation of overtones of the Isoscalar Giant Quadrupole Resonance in rare-earth Nd isotopes

M. Abdullah·S. Bagchi·M. N. Harakeh·H. Akimune·D. Das·T. Doi·L. M. Donaldson·Y. Fujikawa·M. Fujiwara·T. Furuno·U. Garg·Y. K. Gupta·K. B. Howard·Y. Hijikata·K. Inaba·S. Ishida·M. Itoh·N. Kalantar-Nayestanaki·D. Kar·T. Kawabata·S. Kawashima·K. Khokhar·K. Kitamura·N. Kobayashi·Y. Matsuda·A. Nakagawa·S. Nakamura·K. Nosaka·S. Okamoto·S. Ota·S. Pal·R. Pramanik·S. Roy·S. Weyhmiller·Z. Yang·J. C. Zamora
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Abstract

The strength distributions of the Isoscalar Giant Monopole Resonance (ISGMR) and Isoscalar Giant Quadrupole Resonance (ISGQR) in 142,146-150Nd have been determined via inelastic alpha-particle scattering with the Grand Raiden (GR) Spectrometer at the Research Center for Nuclear Physics (RCNP), Japan. In the deformed nuclei 146-150Nd, the ISGMR strength distributions exhibit a splitting into two components, while the nearly spherical nucleus 142Nd displays a single peak in the ISGMR strength distribution. A noteworthy achievement in this study is the first-time detection of overtones in the Isoscalar Giant Quadrupole Resonance (ISGQR) strength distributions within Nd isotopes at an excitation energy around 25 MeV obtained through Multipole Decomposition Analysis (MDA).

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M. Abdullah, S. Bagchi, M. N. Harakeh, H. Akimune, D. Das, T. Doi, L. M. Donaldson, Y. Fujikawa, M. Fujiwara, T. Furuno, U. Garg, Y. K. Gupta, K. B. Howard, Y. Hijikata, K. Inaba, S. Ishida, M. Itoh, N. Kalantar-Nayestanaki, D. Kar, T. Kawabata, S. Kawashima, K. Khokhar, K. Kitamura, N. Kobayashi, Y. Matsuda, A. Nakagawa, S. Nakamura, K. Nosaka, S. Okamoto, S. Ota, S. Pal, R. Pramanik, S. Roy, S. Weyhmiller, Z. Yang, J. C. Zamora. 2024-07-08. Effect of ground-state deformation on the Isoscalar Giant Monopole Resonance and the first observation of overtones of the Isoscalar Giant Quadrupole Resonance in rare-earth Nd isotopes. https://doi.org/10.1016/j.physletb.2024.138852

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