Probing isoscalar giant resonances with multipolarity <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>L</mml:mi><mml:mo>≤</mml:mo><mml:mn>3</mml:mn></mml:mrow></mml:math> in even-<mml:math xmlns:mml="http://www.w3.org/1998/
Background-free inelastic-scattering spectra were measured for even-$A$ neodymium (Nd) isotopes using a halo-free 386-MeV $\ensuremath{\alpha}$ beam at forward angles, including ${0}^{\ensuremath{\circ}}$, to examine the influence of deformation on isoscalar giant resonances. The strength distributions of isoscalar giant resonances (with multipolarity $L\ensuremath{\le}3$) in $^{142}\mathrm{Nd}$ and $^{146\ensuremath{-}150}\mathrm{Nd}$ isotopes are determined using multipole decomposition analysis. This analysis is based on angular distributions calculated within the framework of the distorted-wave Born approximation with transition densities generated with a Woods-Saxon type potential. The isoscalar giant monopole resonance exhibits a distinct splitting into low-energy and high-energy components while going from the spherical nucleus $^{142}\mathrm{Nd}$ to the well-deformed nucleus $^{150}\mathrm{Nd}$ due to coupling with the $K=0$ component of the isoscalar giant quadrupole resonance (ISGQR). The isoscalar giant dipole resonance displays a bimodal structure, with an evidence of coupling between the dipole ($E1$) and high-energy octupole ($E3$) resonance due to deformation effects. The ISGQR splits into distinct $K$ components ($K=0$, 1, and 2) due to deformation. A signature of an overtone mode in ISGQR at an energy around 26 MeV has been obtained.
Authors
- H. Akimune (ORCID: https://orcid.org/0000-0001-5237-5718)
- S. Pal
- S. Ota (ORCID: https://orcid.org/0000-0001-8855-4785)
- Sierra Lisa Weyhmiller (ORCID: https://orcid.org/0000-0001-5405-3480)
- Y.K. Gupta (ORCID: https://orcid.org/0009-0009-6730-5670)
- J. C. Zamora (ORCID: https://orcid.org/0000-0002-4188-4354)
- Z. Yang (ORCID: https://orcid.org/0009-0007-3128-026X)
- T. Furuno (ORCID: https://orcid.org/0000-0002-1733-8353)
- S. Bagchi (ORCID: https://orcid.org/0000-0001-9934-1902)
- M.N. Harakeh (ORCID: https://orcid.org/0000-0002-7271-1712)
- Mitsuru Itoh (ORCID: https://orcid.org/0000-0001-6457-9152)
- Kazuya Kitamura
- Soma Kawashima
- T. Kawabata (ORCID: https://orcid.org/0000-0002-7014-2421)
- Kevin Howard (ORCID: https://orcid.org/0000-0001-6020-2497)
- L. M. Donaldson (ORCID: https://orcid.org/0000-0001-8761-8257)
- Kyoko Nosaka
- K. Inaba
- U. Garg (ORCID: https://orcid.org/0000-0001-8751-4204)
- Y. Fujikawa (ORCID: https://orcid.org/0000-0002-9972-0248)
- Ramkrishna Pramanik (ORCID: https://orcid.org/0000-0003-1670-104X)
- K. Khokhar
- Takanobu Doi (ORCID: https://orcid.org/0000-0002-5834-117X)
- N. Kalantar‐Nayestanaki (ORCID: https://orcid.org/0000-0002-1033-7200)
- Y. Matsuda
- Y. Hijikata (ORCID: https://orcid.org/0000-0001-9463-7122)
- Mamoru Fujiwara (ORCID: https://orcid.org/0000-0003-3066-445X)
- Debarati Das (ORCID: https://orcid.org/0009-0000-8031-1543)
- Soshi Okamoto (ORCID: https://orcid.org/0000-0003-0369-6181)
- S. Roy (ORCID: https://orcid.org/0009-0003-0270-284X)
- S. Ishida
- A. Nakagawa
- S. Nakamura (ORCID: https://orcid.org/0000-0001-9444-4240)
- Nobuyoshi Kobayashi
- M. Abdullah (ORCID: https://orcid.org/0009-0004-5623-986X)
- D. Kar (ORCID: https://orcid.org/0009-0005-0362-5641)
Institutions
- University of Notre Dame (US)
- University of Fukui (JP)
- Bhabha Atomic Research Centre (IN)
- Konan University (JP)
- University of Groningen (NL)
- Indian Institute of Technology Dhanbad (IN)
- Homi Bhabha National Institute (IN)
- Tohoku University (JP)
- Kyoto University (JP)
- iThemba Laboratory (ZA)
- Michigan State University (US)
- The University of Osaka (JP)
Publication Details
- Journal
- Physical review. C
- Published
- 2025-10-21
- DOI
- https://doi.org/10.1103/1p1h-5jh2
- Citations
- 1
- Primary Topic
- Nuclear physics research studies
- Type
- article
- Field-Weighted Citation Impact
- 1.87