Microscopic description of the giant electric-dipole resonance in magic nuclei

Kamerdzhiev, S. P.; Speth, J.; Tertychny, G.; Tselyaev, V.

doi:10.1016/0375-9474(93)90315-o

Cited by 66 publications

(127 citation statements)

References 33 publications

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“…In addition, a small number of phonons greatly reduces the computational effort. This physical assumption has been confirmed in several calculations of M1 excitations [11], the giant dipole resonance [13,14] as well as E2, E0 resonances [16].…”

Section: Theorysupporting

confidence: 55%

“…The main physical approximations have been described above and in [13,14]. Here we present the parameters used for the present calculations.…”

Section: Approximations and Parametersmentioning

confidence: 99%

“…Since the spin-dependent contributions to the low-lying phonon spectrum is small, the difference between g ′ = 0.86 and g ′ = 0.96 has no noticeable consequences for the results. The parameters f ex has been fitted to available phonon energies and ranges from -5.0 to -3.5 which is not far from the value f ex = −3.74 used earlier [13,14,16]. …”

Section: Approximations and Parametersmentioning

confidence: 99%

“…Recently a formalism for including such configurations in conjunction with the single-particle continuum has been successfully used in the description of giant electric resonances [13,14]. In particular, the widths are reproduced satisfactorily.…”

Section: Introductionmentioning

confidence: 99%

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M1 resonances in unstable magic nuclei

Kamerdzhiev

Speth

Tertychny

et al. 1993

Z. Physik A - Hadrons and Nuclei

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Within a microscopic approach which takes into account RPA configurations, the single-particle continuum and more complex 1p1h ⊗ phonon configurations isoscalar and isovector M1 excitations for the unstable nuclei 56,78 Ni and 100,132 Sn are calculated. For comparison, the experimentally known M1 excitations in 40 Ca and 208 Pb have also been calculated. In the latter nuclei good agreement in the centroid energy, the total transition strength and the resonance width is obtained. With the same parameters we predict the magnetic excitations for the unstable nuclei. The strength is sufficiently concentrated to be measurable in radioactive beam experiments. New features are found for the very neutron rich nucleus 78 Ni and the neutron deficient nucleus 100 Sn.

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Section: Theorysupporting

confidence: 55%

“…The main physical approximations have been described above and in [13,14]. Here we present the parameters used for the present calculations.…”

Section: Approximations and Parametersmentioning

confidence: 99%

Section: Approximations and Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

M1 resonances in unstable magic nuclei

Kamerdzhiev

Speth

Tertychny

et al. 1993

Z. Physik A - Hadrons and Nuclei

Self Cite

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“…[24]. On the non-relativistic side, such techniques have also been used in the context of the non-spectral representation without [62,63] and with [64] pairing. So far, however, fully self-consistent relativistic applications including complex configurations with a proper treatment of the continuum are still missing.…”

Section: Discussionmentioning

confidence: 99%

Continuum random-phase approximation for relativistic point coupling models

Daoutidis

Ring

2009

Phys. Rev. C

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Relativistic Continuum Random Phase Approximation (CRPA) is used to investigate collective excitation phenomena in several spherical nuclei along the periodic table. We start from relativistic mean field calculations based on a covariant density functional with density dependent zero range forces. From the same functional an effective interaction is obtained as the second derivative with respect to the density. This interaction is used in relativistic continuum-RPA calculations for the investigation of isoscalar monopole, isovector dipole and isoscalar quadrupole resonances of spherical nuclei. In particular we study the low-lying E1 strength in the vicinity of the neutron evaporation threshold. The properties of the resonances, such as centroid energies and strengths distributions are compared with results of discrete RPA calculations for the same model as well as with experimental data.

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References for chapter 1

Soloviev¹

Z = 2 - 36

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Microscopic description of the giant electric-dipole resonance in magic nuclei

Cited by 66 publications

References 33 publications

M1 resonances in unstable magic nuclei

M1 resonances in unstable magic nuclei

Continuum random-phase approximation for relativistic point coupling models

References for chapter 1

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