Editorial

Ring, J; Bailey, Andy

doi:10.1088/0022-3735/6/10/201

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…In case of the finite-range Gogny interaction, the effect enters through the exchange term. The energy dependence is considered only as a perturbation correction atop of the HF result [15][16][17][18][19] and is usually completely ignored.…”

Section: Introductionmentioning

confidence: 99%

Surface-peaked effective mass in the nuclear energy density functional and its influence on single-particle spectra

2010

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Calculations for infinite nuclear matter with realistic nucleon-nucleon interactions suggest that the isoscalar effective mass of a nucleon at the saturation density m * /m equals 0.8 ± 0.1. This result is at variance with empirical data on the level density in finite nuclei, which are consistent with m * /m ≈ 1. Ma and Wambach suggested that these two contradicting results may be reconciled within a single theoretical framework by assuming a radial-dependent effective mass, peaked at the nuclear surface. The aim of this exploratory work is to investigate this idea within the density functional theory by using a Skyrme-type local functional enriched with new terms, τ (∇ρ) 2 and τ (dρ/dr), where τ and ρ denote the kinetic and particle densities, respectively. We show that each of these terms can give rise to a surface peak in the effective mass, but of a limited height. We investigate the influence of the radial profile of the effective mass on the spin-orbit splittings and centroids. In particular, we demonstrate that the τ (dρ/dr) term quenches the 1f 5/2 -1f 7/2 splitting in 40 Ca, which is strongly overestimated within conventional Skyrme parametrizations.

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Section: Introductionmentioning

confidence: 99%

Surface-peaked effective mass in the nuclear energy density functional and its influence on single-particle spectra

2010

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“…When looking at the archives of the journal [1][2][3][4][5], its early years went under the title of Journal of Scientific Instruments, and therefore started off with a strong physics bias. It is, therefore, not surprising that it was first published by the Institute of Physics in London.…”

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confidence: 99%

Measurement Science and Technology: a historical perspective

Dewhurst

2012

Meas. Sci. Technol.

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“…Refs. [1][2][3][4][5][6][7][8][9][10], and references therein), also making use of effective forces and self-consistent methods [11,12], no single calculation exists of this quantity in deformed, let alone rotating nuclei. This is the subject of the present paper, where we present, for the first time, a calculation of the nucleon v mass for a mediumheavy deformed nucleus as a function of the rotational frequency along the yrast line [13].…”

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confidence: 99%

Effective Nucleon Mass in Deformed Nuclei

et al. 2000

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The coupling of vibrations to nucleons moving in levels lying close to the Fermi energy of deformed rotating nuclei is found to lead to a number of effects: (i) shifts of the single-particle levels of the order of 0.5 MeV towards the Fermi energy and thus to an increase of the level density, (ii) single-particle state depopulation of the order of 30%, and thus spectroscopic factors approximately 0.7, etc. These effects, which we have calculated for 168Yb, can be expressed in terms of an effective mass, the so-called omega mass ( m(omega)), which is approximately 40% larger than the bare nucleon mass in the ground state. It is found that m(omega) displays a strong dependence with rotational frequency, eventually approaching the bare mass for Planck's over 2piomega(rot) approximately 0.5-0.6 MeV.

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Editorial

Cited by 4 publications

References 8 publications

Surface-peaked effective mass in the nuclear energy density functional and its influence on single-particle spectra

Surface-peaked effective mass in the nuclear energy density functional and its influence on single-particle spectra

Measurement Science and Technology: a historical perspective

Effective Nucleon Mass in Deformed Nuclei

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