Giant Multipole Resonances in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Zr</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>90</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>Observed by Inelastic Electron Scattering

Fukuda, Shintaro; Torizuka, Y.

doi:10.1103/physrevlett.29.1109

Cited by 130 publications

(25 citation statements)

References 10 publications

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“…11 where the constant has been adjusted from the author's suggested value in order to fit the experimental results. There is clear discrepancy in the sum rule depletion as deduced from the (a,a') and ( 3 He, 3 He l ) results on the one hand and the. ;.…”

Section: Isosca"iar Giant Octupole Resonancesmentioning

confidence: 94%

“…Figure 15 shows the advantages to be gained with small angle measurements. The giant resonance peak, extracted from the continuum, is shown for the reaction 19 ) 90 Zr( 3 He, 3 He') at several small angles. It is apparent that the centroid of the entire peak shifts and the width of the peak is not constant as the angle of observation varies, both effects being indicative of the existence of two different multipolarities within t>'* single broad peak.…”

Section: Isoscalar Giant Monopole Resonancementioning

confidence: 99%

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Giant multipole resonances — perspectives after ten years

Bertrand¹

1981

Nuclear Physics A

163

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Nearly ten years ago evidence was published for the first of the socalled giant --multi pole resonances, the giant quadrupole resonance. During the ensuing years research in this new field has spread to many nuclear physics laboratories throughout the world. A review of the present status of electric giant multipole resonances is provided in this presentation.Other presentations to this conference will describe magnetic giant resonances, giant resonance decay modes, and theoretical implications of the "new" giant resonances.

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Section: Isosca"iar Giant Octupole Resonancesmentioning

confidence: 94%

Section: Isoscalar Giant Monopole Resonancementioning

confidence: 99%

Giant multipole resonances — perspectives after ten years

Bertrand¹

1981

Nuclear Physics A

163

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“…The survival of ordered motion in hot nuclei, i.e., in a chaotic environment, is one of the most striking phenomena in nuclear physics. Other kinds of GR have been discovered, such as the isoscalar giant quadrupole resonance (GQR) associated with an oscillation of the shape between a prolate and an oblate deformation [6], and the isoscalar giant monopole resonance (GMR) corresponding to a breathing mode [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Couplings between dipole and quadrupole vibrations in tin isotopes

Simenel¹,

Chomaz²

2009

Phys. Rev. C

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We study the couplings between collective vibrations such as the isovector giant dipole and isoscalar giant quadrupole resonances in tin isotopes in the framework of the time-dependent Hartree-Fock theory with a Skyrme energy density functional. These couplings are a source of anharmonicity in the multiphonon spectrum. In particular, the residual interaction is known to couple the isovector giant dipole resonance with the isoscalar giant quadrupole resonance built on top of it, inducing a nonlinear evolution of the quadrupole moment after a dipole boost. This coupling also affects the dipole motion in a nucleus with a static or dynamical deformation induced by a quadrupole constraint or boost respectively. Three methods associated with these different manifestations of the coupling are proposed to extract the corresponding matrix elements of the residual interaction. Numerical applications of the different methods to 132 Sn are in good agreement with each other. Finally, several tin isotopes are considered to investigate the role of isospin and mass number on this coupling. A simple 1/A dependence of the residual matrix elements is found with no noticeable contribution from the isospin. This result is interpreted within the Goldhaber-Teller model.

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“…Other multipole resonances have also been measured [13,22] and predicted by microscopic random-phase approximation (RPA) using a density-dependent particle-hole force [23]. However, the quasideuteron (QD) channel dominates the total photoabsorption cross section in the 40-to 140-MeV range.…”

Section: Photoabsorption Mechanisms Below Pion Thresholdmentioning

confidence: 99%

Photon-induced multiple particle emissions ofZr90andnatZr from 10 to 140 MeV

et al. 2007

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A comprehensive analysis of electrodisintegration yields of protons on 90 Zr is proposed taking into account the giant dipole resonance, isovector giant quadrupole resonance (IVGQR), and quasideuteron contributions to the total photoabsorption cross section from 10 to 140 MeV. The calculation applies the MCMC intranuclear cascade to address the direct and pre-equilibrium emissions and another Monte Carlo-based algorithm to describe the evaporation step. The final results of the total photoabsorption cross section for 90 Zr and relevant decay channels are obtained by fitting the (e, p) measurements from the National Bureau of Standards and show that multiple proton emissions dominate the photonuclear reactions at higher energies. These results provide a consistent explanation for the exotic and steady increase of the (e, p) yield and also a strong evidence of a IVGQR with a strength parameter compatible with the E2 energy-weighted sum rule. The inclusive photoneutron cross sections for 90 Zr and nat Zr, derived from these results and normalized with the (e, p) data, are in agreement within 10% with both Livermore and Saclay data up to 140 MeV.

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Giant Multipole Resonances inZr90Observed by Inelastic Electron Scattering

Cited by 130 publications

References 10 publications

Giant multipole resonances — perspectives after ten years

Giant multipole resonances — perspectives after ten years

Couplings between dipole and quadrupole vibrations in tin isotopes

Photon-induced multiple particle emissions ofZr90andnatZr from 10 to 140 MeV

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