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Scott, M.; Zegers, R. G. T.; Almus, R.; Austin, Sam M.; Bazin, D.; Brown, B. A.; Campbell, C. M.; Gade, A.; Bowry, M.; Galès, S.; Garg, U.; Harakeh, Mohsen; Kwan, E.; Langer, C.; Loelius, C.; Lipschutz, S.; Литвинова, Елена; Lunderberg, E.; Morse, C.; Noji, S.; Perdikakis, G.; Redpath, Thomas; Robin, Caroline; Sakai, H.; Sasamoto, Y.; Sasano, M.; Sullivan, Chris; Tostevin, J. A.; Uesaka, T.; Weißhaar, D.

doi:10.1103/physrevlett.118.172501

Cited by 12 publications

(11 citation statements)

References 58 publications

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“…In Ref. [68], the 28 Si( 10 Be, 10 B * ) reaction has been employed to identify the IVGMR in a deformed nucleus. The differential cross section displays a broad peak ranging from 10 to 30 MeV in 28 Al.…”

Section: Spherical Nucleimentioning

confidence: 99%

Isovector giant monopole and quadrupole resonances in a Skyrme energy density functional approach with axial symmetry

Yoshida

2021

Phys. Rev. C

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Background: Giant resonance (GR) is a typical collective mode of vibration. The deformation splitting of the isovector (IV) giant dipole resonance is well established. However, the splitting of GRs with other multipolarities is not well understood. Purpose: I explore the IV monopole and quadrupole excitations and attempt to obtain the generic features of IV giant resonances in deformed nuclei by investigating the neutral and charge-exchange channels simultaneously. Method: I employ a nuclear energy-density functional (EDF) method: the Skyrme-Kohn-Sham-Bogoliubov and the quasiparticle random-phase approximation are used to describe the ground state and the transition to excited states. Results: I find the concentration of the monopole strengths in the energy region of the isobaric analog or Gamow-Teller resonance irrespective of nuclear deformation, and the appearance of a high-energy giant resonance composed of the particle-hole configurations of 2 hω 0 excitation. Splitting of the distribution of the strength occurs in the giant monopole and quadrupole resonances due to deformation. The lower K states of quadrupole resonances appear lower in energy and possess the enhanced strengths in the prolate configuration, and vice versa in the oblate configuration, while the energy ordering depending on K is not clear for the J = 1 and J = 2 spin-quadrupole resonances. Conclusions: The deformation splitting occurs generally in the giant monopole and quadrupole resonances. The K dependence of the quadrupole transition strengths is largely understood by the anisotropy of density distribution.

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Section: Spherical Nucleimentioning

confidence: 99%

Isovector giant monopole and quadrupole resonances in a Skyrme energy density functional approach with axial symmetry

Yoshida

2021

Phys. Rev. C

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“…In Ref. [56], the 28 Si( 10 Be, 10 B * ) reaction has been employed to identify the IVGMR in a deformed nucleus. The differential cross-section displays a broad peak ranging from 10 MeV to 30 MeV in 28 Al.…”

Section: Deformation Effectsmentioning

confidence: 99%

Isovector giant monopole and quadrupole resonances in a Skyrme energy density functional approach with axial symmetry

Yoshida

2021

Preprint

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Background: Giant resonance (GR) is a typical collective mode of vibration. The deformation splitting of the isovector (IV) giant dipole resonance is well established. However, the splitting of GRs with other multipolarities is not well understood.Purpose: I explore the IV monopole and quadrupole excitations and attempt to obtain the generic features of IV giant resonances in deformed nuclei by investigating the neutral and charge-exchange channels simultaneously.Method: I employ a nuclear energy-density functional (EDF) method: the Skyrme-Kohn-Sham-Bogoliubov and the quasiparticle random-phase approximation are used to describe the ground state and the transition to excited states.Results: I find the concentration of the monopole strengths in the energy region of the isobaric analog or Gamow-Teller resonance irrespective of nuclear deformation, and the appearance of a high-energy giant resonance composed of the particle-hole configurations of 2 ω0 excitation. Splitting of the distribution of the strength occurs in the giant monopole and quadrupole resonances due to deformation. The lower K states of quadrupole resonances appear lower in energy and possess the enhanced strengths in the prolate configuration, and vice versa in the oblate configuration, while the energy ordering depending on K is not clear for the J = 1 and J = 2 spin-quadrupole resonances. Conclusions:The deformation splitting occurs generously in the giant monopole and quadrupole resonances. The K-dependence of the quadrupole transition strengths is largely understood by the anisotropy of density distribution.

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“…The details are given in Ref. [44]. compared with theoretical calculations based on the normal-modes (NM) formalism and on the pn-R(Q)TBA strength functions.…”

Section: Applications To Isospin-flip Excitationsmentioning

confidence: 99%

“…In Ref. [44] the ( 10 Be, 10 B[1.74 MeV]) charge-exchange reaction at 100 AMeV was presented as a new probe, which is capable of isolating the isovector (∆T = 1) non-spin-transfer (∆S = 0) nuclear response. The N=Z neutron deficient nucleus 28 Si was chosen for this study at the National Superconducting Cyclotron Laboratory (NSCL).…”

Section: Applications To Isospin-flip Excitationsmentioning

confidence: 99%

“…The experimental isovector giant monopole (top) and isovector giant dipole (bottom) resonances in28 Si extracted from28 Si( 10 Be, 10 B)28 Al charge-exchange reaction (black circles with error bars) compared to the normal-modes (NM) calculation (blue dashed curves) and to the cross sections computed with the pn-R(Q)TBA strength functions (red solid curves). The details are given in Ref [44]…”

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Isospin dynamics in nuclear structure

2018

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Abstract. We discuss some special aspects of the nuclear many-body problem related to isospin transfer. The major quantity of interest is the in-medium propagator of a particlehole configuration of the proton-neutron character, which determines the nuclear response to isospin transferring external fields. One of the most studied excitation modes is the Gamow-Teller resonance (GTR), which can, therefore, be used as a sensitive test for the theoretical approaches. Its low-energy part, which is responsible for the beta decay halflives, is especially convenient for this. Models benchmarked against the GTR can be used to predict other, more exotic, excitations studied at nuclear rare isotope beam facilities and in astrophysics. As far as the precision is concerned, the major problem in such an analysis is to disentangle the effects related to the underlying interaction and those caused by the many-body correlations. Therefore, approaches (i) based on fundamental concepts for the nucleon-nucleon interaction which (ii) include complex many-body dynamics are the preferred ones. We discuss progress and obstacles on the way to such approaches.

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Observation of the Isovector Giant Monopole Resonance via theSi28(Be10,

Cited by 12 publications

References 58 publications

Isovector giant monopole and quadrupole resonances in a Skyrme energy density functional approach with axial symmetry

Isovector giant monopole and quadrupole resonances in a Skyrme energy density functional approach with axial symmetry

Isovector giant monopole and quadrupole resonances in a Skyrme energy density functional approach with axial symmetry

Isospin dynamics in nuclear structure

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