Compression mode resonances in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mi mathvariant="normal">Zr</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>90</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math>

Youngblood, D. H.; Lui, Y.‐W.; John, B. V.; Tokimoto, Y.; Clark, H. L.; Chen, X.

doi:10.1103/physrevc.69.054312

Cited by 127 publications

(364 citation statements)

References 28 publications

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“…The most important contribution to the spreading width comes from the first 3 − state, in agreement width previous calculations [16]. Finally, we get an energy centroid of E = 10.9 MeV and a width Γ ↓ ≈ 2 MeV, in good agreement width the experimental findings [23]. A more detailed discussion can be found in [11].…”

Section: The Isgqr and Ivgqr Strength Functionssupporting

confidence: 91%

Microscopic calculations beyond mean-field with zero-range effective interactions

Brenna

Bortignon

Roca-Maza

2012

EPJ Web of Conferences

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A completely microscopic formalism has been developed to treat the observable properties of singleparticle states (e.g. energies and spectroscopic factors), as well as of collective states (e.g., their energy centroid, their damping width and their gamma decay to the ground state or to low lying states) beyond mean-field. The phonons are calculated within the fully self-consistent random phase approximation (RPA). The particle-vibration coupling (PVC) is accounted for within the framework of the nuclear field theory (NFT) at the lowest contributing order. All the calculations have been performed using the whole effective Skyrme interaction.

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Section: The Isgqr and Ivgqr Strength Functionssupporting

confidence: 91%

Microscopic calculations beyond mean-field with zero-range effective interactions

Brenna

Bortignon

Roca-Maza

2012

EPJ Web of Conferences

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“…8 in comparison with the experimental data from the Research Center for Nuclear Physics (RCNP), Osaka University [6,7], and Texas A&M University (TAMU) [30,36,37].…”

Section: Resultsmentioning

confidence: 99%

Incompressibility of neutron-rich matter

2009

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The saturation properties of neutron-rich matter are investigated in a relativistic mean-field formalism using two accurately calibrated models: NL3 and FSUGold. The saturation properties-density, binding energy per nucleon, and incompressibility coefficient-are calculated as a function of the neutron-proton asymmetry α ≡ (N − Z)/A to all orders in α. Good agreement (at the 10% level or better) is found between these numerical calculations and analytic expansions that are given in terms of a handful of bulk parameters determined at saturation density. Using insights developed from the analytic approach and a general expression for the incompressibility coefficient of infinite neutron-rich matter, i.e., K 0 (α) = K 0 + K τ α 2 + · · ·, we construct a hybrid model with values for K 0 and K τ as suggested by recent experimental findings. Whereas the hybrid model provides a better description of the measured distribution of isoscalar monopole strength in the Sn isotopes relative to both NL3 and FSUGold, it significantly underestimates the distribution of strength in 208 Pb. Thus, we conclude that the incompressibility coefficient of neutron-rich matter remains an important open problem.

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“…(Color online) Calculated ISGMR centroid energies in the even-even [204][205][206][207][208] Pb isotopes are compared with the experimental data obtained from Refs. [10,32,33]. The forces (a) SLy5, (b) SkM * , and (c) SkP are adopted in the present calculations together with either the filling approximation, the volume, the surface, or the mixed pairing interactions, respectively.…”

Section: A CD Isotopesmentioning

confidence: 99%

Microscopic study of the isoscalar giant monopole resonance in Cd, Sn, and Pb isotopes

2012

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The isoscalar giant monopole resonance (ISGMR) in Cd, Sn, and Pb isotopes has been studied within the self-consistent Skyrme Hartree-Fock + BCS and quasiparticle random phase approximation (QRPA). Three Skyrme parameter sets are used in the calculations (i.e., SLy5, SkM * , and SkP) since they are characterized by different values of the compression modulus in symmetric nuclear matter; namely, K ∞ = 230, 217, and 202 MeV, respectively. We also investigate the effect of different types of pairing forces on the ISGMR in Cd, Sn, and Pb isotopes. The various calculated energies and the strength distributions of the ISGMR are compared with available experimental data. We find that SkP underestimates the various energies for all isotopes due to its low value of the nuclear matter incompressibility; namely, K ∞ = 202 MeV. However, it can give a better description on the constrained energies for Cd isotopes and a reasonable peak energy for some nuclei. On the other hand, the SLy5 parameter set, supplemented by an appropriate pairing interaction, gives a reasonable description of the scaling energies in Cd and Sn isotopes and a good centroid energy in Pb isotopes. A better description of ISGMR in Cd and Sn isotopes is achieved by the SkM * interaction, which has a somewhat softer value of the nuclear incompressibility.

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Compression mode resonances inZr90

Cited by 127 publications

References 28 publications

Microscopic calculations beyond mean-field with zero-range effective interactions

Microscopic calculations beyond mean-field with zero-range effective interactions

Incompressibility of neutron-rich matter

Microscopic study of the isoscalar giant monopole resonance in Cd, Sn, and Pb isotopes

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