Single-particle strength distributions in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Ca</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>41</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>

Eckle, F.J.; Lenske, H.; Eckle, G.; Graw, G.; Hertenberger, R.; Kader, H.; Merz, F.; Nann, H.; Schiemenz, P.; Wolter, H.H.

doi:10.1103/physrevc.39.1662

Cited by 33 publications

(29 citation statements)

References 20 publications

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“…The three Yukawa parameterization of a G-matrix calculated initially for 16 O by Toki et al [21,22] is used. This so-called M3Y interaction has been widely and successfully applied in nuclear reaction [23,24] and structure calculations [10,25,26]. The former studies, especially for nuclear reactions, indicate that this interaction has a realistic momentum structure including a long range one pion-exchange tail.…”

Section: Introductionmentioning

confidence: 99%

Hartree-Fock calculations in the density matrix expansion approach

1998

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The density matrix expansion is used to derive a local energy density functional for finite range interactions with a realistic meson exchange structure. Exchange contributions are treated in a local momentum approximation. A generalized Slater approximation is used for the density matrix where an effective local Fermi momentum is chosen such that the next to leading order off-diagonal term is canceled. Hartree-Fock equations are derived incorporating the momentum structure of the underlying finite range interaction. For applications a density dependent effective interaction is determined from a G-matrix which is renormalized such that the saturation properties of symmetric nuclear matter are reproduced. Intending applications to systems far off stability special attention is paid to the low density regime and asymmetric nuclear matter. Results are compared to predictions obtained from Skyrme interactions. The ground state properties of stable nuclei are well reproduced without further adjustments of parameters. The potential of the approach is further exemplified in calculations for A=100. . .140 tin isotopes. Rather extended neutron skins are found beyond 130 Sn corresponding to solid layers of neutron matter surrounding a core of normal composition.21.60-n,21.60Jz,21.10.Dr

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Section: Introductionmentioning

confidence: 99%

Hartree-Fock calculations in the density matrix expansion approach

1998

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“…Within a {gm}-subspace, the convergence rate r/v +1/1/v is about 0.1 for any two consecutive eigenvalues above the Fermi level. This explains the high-energy cut-off Ex<40MeV [12] or Ex<75 MeV [6] which has to be used within the RPA calculations to predict the singleparticle occupancies in nuclei.…”

Section: Resultsmentioning

confidence: 99%

“…For this reason, efforts are devoted to determine n (k) from inclusive hadron (pion and proton) and electron scattering experiments [2][3][4][5]. There exist also experimental [5][6][7][8] and theoretical [9][10][11][12] evidences for a significant depletion of the nuclear Fermi sea which is due mainly to the short-range and tensor correlations in nuclei.…”

Section: Introductionmentioning

confidence: 99%

Occupation probabilities and momentum distributions in closedS-D shell nuclei

Stoitsov

Antonov

1993

Z. Physik A - Hadrons and Nuclei

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Abstract. Single-particle occupation probabilities and the depletion of the nuclear Fermi sea (caused by the shortrange nucleon-nucleon correlations) as well as momentum distributions in closed s-d shell nuclei are calculated within the Jastrow correlation method in its low-order approximation. The theoretical results for the occupation probabilities are discussed in relation to experimental data from (e, e' p) reactions and to other theoretical estimates.

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“…Core polarization may even lower fractional spectral strength from the next higher major shell into the region under investigation. Although calculations for the mass region under scrutiny are not available, results on other stable and neutron-rich nuclei [38][39][40][41] indicate that the coupling of single-particle states to collective multiparticlehole configurations will increase with neutron excess. The sd and sdpf shell model may underestimate such collective couplings because of their necessarily limited configuration spaces.…”

Section: Occupation Probability Resultsmentioning

confidence: 99%

One-neutron removal reactions on Al isotopes around theN=20shell closure

Nociforo¹,

Procházka²,

Kanungo³

et al. 2012

Phys. Rev. C

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The one-neutron removal cross sections of neutron-rich Al isotopes and longitudinal momentum distributions of the residues have been measured for A = 33 to 36 at relativistic energies (≈900 MeV/u). The inclusive data have been interpreted within the eikonal approximation. The evolution of the single-particle occupancy in the ground state of 33,34,35 Al has been studied and compared with shell model predictions. The inferred 2s 1/2 neutron occupancy in the 33 Al ground-state wave function is 20% to 40% lower than the predicted one. The inclusive data do not exclude the presence of intruder states. Some intruder l = 1 occupancy is found in 34 Al, similarly to 33 Mg. The single-particle 1f 7/2 occupancy shows a gradual increase at N = 22. Correspondingly, a decrease of the 1d 3/2 strength has been observed.

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Single-particle strength distributions inCa41

Cited by 33 publications

References 20 publications

Hartree-Fock calculations in the density matrix expansion approach

Hartree-Fock calculations in the density matrix expansion approach

Occupation probabilities and momentum distributions in closedS-D shell nuclei

One-neutron removal reactions on Al isotopes around theN=20shell closure

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