dorsal/arxiv
View SchemaOn three topical aspects of the N=28 isotonic chain
| Authors | J. Piekarewicz |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0605023 |
| URL | https://arxiv.org/abs/nucl-th/0605023 |
| DOI | 10.1088/0954-3899/34/3/005 |
| Journal | J.Phys.G33:467-478,2007 |
Abstract
The evolution of single-particle orbits along the N=28 isotonic chain is studied within the framework of a relativistic mean-field approximation. We focus on three topical aspects of the N=28 chain: (a) the emergence of a new magic number at Z=14; (b) the possible erosion of the N=28 shell; and (c) the weakening of the spin-orbit splitting among low-j neutron orbits. The present model supports the emergence of a robust Z=14 subshell gap in 48Ca, that persists as one reaches the neutron-rich isotone 42Si. Yet the proton removal from 48Ca results in a significant erosion of the N=28 shell in 42Si. Finally, the removal of s1/2 protons from 48Ca causes a ~50% reduction of the spin-orbit splitting among neutron p-orbitals in 42Si.
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"abstract": "The evolution of single-particle orbits along the N=28 isotonic chain is\nstudied within the framework of a relativistic mean-field approximation. We\nfocus on three topical aspects of the N=28 chain: (a) the emergence of a new\nmagic number at Z=14; (b) the possible erosion of the N=28 shell; and (c) the\nweakening of the spin-orbit splitting among low-j neutron orbits. The present\nmodel supports the emergence of a robust Z=14 subshell gap in 48Ca, that\npersists as one reaches the neutron-rich isotone 42Si. Yet the proton removal\nfrom 48Ca results in a significant erosion of the N=28 shell in 42Si. Finally,\nthe removal of s1/2 protons from 48Ca causes a ~50% reduction of the spin-orbit\nsplitting among neutron p-orbitals in 42Si.",
"arxiv_id": "nucl-th/0605023",
"authors": [
"J. Piekarewicz"
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"doi": "10.1088/0954-3899/34/3/005",
"journal_ref": "J.Phys.G33:467-478,2007",
"title": "On three topical aspects of the N=28 isotonic chain",
"url": "https://arxiv.org/abs/nucl-th/0605023"
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