dorsal/arxiv
View SchemaMany-Particle and Many-Hole States in Neutron-Rich Ne Isotopes Related to Broken N=20 Shell Closure
| Authors | Masaaki Kimura, Hisashi Horiuchi |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0404032 |
| URL | https://arxiv.org/abs/nucl-th/0404032 |
| DOI | 10.1143/PTP.111.841 |
| Journal | Prog.Theor.Phys. 111 (2004) 841-855 |
Abstract
The low-lying level structures of $^{26}{\rm Ne}$, $^{28}{\rm Ne}$ and $^{30}{\rm Ne}$ which are related to the breaking of the N=20 shell closure have been studied by the framework of the deformed-basis antisymmetrized molecular dynamics plus generator coordinate method using Gogny D1S force. The properties of the many-particle and many-hole states are discussed as well as that of the ground band. We predict that the negative-parity states in which neutrons are promoted into $pf$-orbit from $sd$ orbit have the small excitation energy in the cases of $^{28}{\rm Ne}$ and $^{30}{\rm Ne}$ which, we regard, is a typical phenomena accompanying the breaking of N=20 shell closure. It is also found that the neutron $4p4h$ structure of $^{30}{\rm Ne}$ appears in low excitation energy which contains $\alpha + ^{16}{\rm O}$ correlations.
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"abstract": "The low-lying level structures of $^{26}{\\rm Ne}$, $^{28}{\\rm Ne}$ and\n$^{30}{\\rm Ne}$ which are related to the breaking of the N=20 shell closure\nhave been studied by the framework of the deformed-basis antisymmetrized\nmolecular dynamics plus generator coordinate method using Gogny D1S force. The\nproperties of the many-particle and many-hole states are discussed as well as\nthat of the ground band. We predict that the negative-parity states in which\nneutrons are promoted into $pf$-orbit from $sd$ orbit have the small excitation\nenergy in the cases of $^{28}{\\rm Ne}$ and $^{30}{\\rm Ne}$ which, we regard, is\na typical phenomena accompanying the breaking of N=20 shell closure. It is also\nfound that the neutron $4p4h$ structure of $^{30}{\\rm Ne}$ appears in low\nexcitation energy which contains $\\alpha + ^{16}{\\rm O}$ correlations.",
"arxiv_id": "nucl-th/0404032",
"authors": [
"Masaaki Kimura",
"Hisashi Horiuchi"
],
"categories": [
"nucl-th"
],
"doi": "10.1143/PTP.111.841",
"journal_ref": "Prog.Theor.Phys. 111 (2004) 841-855",
"title": "Many-Particle and Many-Hole States in Neutron-Rich Ne Isotopes Related to Broken N=20 Shell Closure",
"url": "https://arxiv.org/abs/nucl-th/0404032"
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