A study of the Thomas-Reiche-Kuhn sum rule in finite nuclei

Traini, M.; Orlandini, Giuseppina; Leonardi, R.

doi:10.1007/bf02770635

Cited by 14 publications

(23 citation statements)

References 33 publications

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“…5) and also for 208 Pb [ Fig. 4 40 Ca, and 208 Pb nuclei we compare the results of our calculations with the experimental data of Ref. [34].…”

Section: A Comparison Between Crpa and Drpamentioning

confidence: 76%

“…For the 16 O, 40 Ca, and 208 Pb nuclei we obtained the values of 336, 834, and 4420 mb MeV, respectively. These values should be compared with those obtained by using the Thomas-Reiche-Khun (TRK) sum rule corrected by the enhancement factor related to the isospin-dependent, and eventually tensor, terms, of the interaction used.…”

Section: A Comparison Between Crpa and Drpamentioning

confidence: 99%

“…wave functions and energies were the same for each isotope of the chain. The effective nucleon-nucleon interaction used in those RPA calculations was a density dependent zerorange Landau-Migdal force, whose parameters were chosen to reproduce the energies of the low-lying 3 − states and the centroid energies of the GDR in 16 O, 40 Ca, and 208 Pb nuclei. The main result of that investigation was the observation of dipole strength at energies lower than those of the GDR that increased with the neutron excess.…”

Section: Introductionmentioning

confidence: 99%

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Pygmy and giant electric dipole responses of medium-heavy nuclei in a self-consistent random-phase approximation approach with a finite-range interaction

et al. 2013

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The pygmy dipole resonance (PDR) is studied in various medium-heavy nuclei by using a Gogny interaction in a self-consistent Hartree-Fock plus random phase approximation method. We compare the details of the PDR structure with those of the giant dipole resonance (GDR). In the PDR protons and neutrons vibrate in phase, and the main contributions are given by particle-hole excitations involving the neutrons in excess. On the contrary, in the GDR protons and neutrons vibrate out of phase, and all the nucleons are involved in the excitation. The values of the parameters we used to define the collectivity of an excitation indicate that the PDR is less collective than the GDR. We also investigate the role of the residual interaction in the appearance of the PDR and we find a subtle interplay with the shell structure of the nucleus.

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“…5) and also for 208 Pb [ Fig. 4 40 Ca, and 208 Pb nuclei we compare the results of our calculations with the experimental data of Ref. [34].…”

Section: A Comparison Between Crpa and Drpamentioning

confidence: 76%

Section: A Comparison Between Crpa and Drpamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pygmy and giant electric dipole responses of medium-heavy nuclei in a self-consistent random-phase approximation approach with a finite-range interaction

et al. 2013

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“…3 that the RPA calculation overestimates the magnitude of κ(A) (see also Refs. [3,8,9]). The RPA result for κ(A) can be improved by a fit of the relevant parameters t 1 and t 2 in the Skyrme forces.…”

Section: Numerical Calculationsmentioning

confidence: 99%

“…The origin of the corresponding enhancement factor of the IVGDR sum m 1 was intensively investigated for both nuclear matter and finite nuclei (see Refs. [1,3] and references therein). The random-phase approximation (RPA) calculations of the enhancement factor for symmetric nuclear matter were recently performed for a representative set of Skyrme forces in Ref.…”

Section: Introductionmentioning

confidence: 99%

Adependence of the enhancement factor in energy-weighted sums for isovector giant resonances

Kolomietz¹,

Lukyanov

2009

Phys. Rev. C

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We consider the energy weighted sums (EWS) for isovector giant dipole resonances (IVGDR) in finite nuclei within Landau kinetic theory. The dependence of both IVGDR energy, E IVGDR , and the EWS enhancement factor, κ(A), on the mass number A occurs because of the boundary condition on the moving nuclear surface. The values of E IVGDR A 1/3 and κ(A) increase with A. The obtained value of the enhancement factor is about 10% for light nuclei and reaches approximately 20% for heavy nuclei. A fit of the enhancement factor to the proper experimental data provides a value for the isovector Landau amplitude of F 1 1.1.

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Quasi-elastic electron scattering off nuclei: a study of Coulomb distortion effects

Traini

Covi

1995

Nuov Cim A

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A study of the Thomas-Reiche-Kuhn sum rule in finite nuclei

Cited by 14 publications

References 33 publications

Pygmy and giant electric dipole responses of medium-heavy nuclei in a self-consistent random-phase approximation approach with a finite-range interaction

Pygmy and giant electric dipole responses of medium-heavy nuclei in a self-consistent random-phase approximation approach with a finite-range interaction

Adependence of the enhancement factor in energy-weighted sums for isovector giant resonances

Quasi-elastic electron scattering off nuclei: a study of Coulomb distortion effects

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