Many-Particle and Many-Hole States in Neutron-Rich Ne Isotopes Related to Broken N = 20 Shell Closure(Nuclear Physics)
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概要
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The low-lying level structures of ^<26>Ne, ^<28>Ne and ^<30>Ne which are related to the breaking of the N=20 shell closure have been studied in the framework of the deformed-basis anti-symmetrized molecular dynamics plus generator coordinate method using the Gogny D1S force. The properties of the many-particle and many-hole states are studied as well as that of the ground band. We predict that the negative-parity states, in which neutrons are promoted into the pf-orbit from the sd orbit, have a small excitation energy in the cases of ^<28>Ne and ^<30>Ne. We regard this to be a typical phenomena accompanying the breaking of the N=20 shell closure. It is also found that the neutron 4p4h structure of ^<30>Ne appears at low excitation energy, which contains α+^<16>O correlations.
- 理論物理学刊行会の論文
- 2004-06-25
著者
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堀内 昶
Research Center For Nuclear Physics Osaka University:international Institute For Advanced Studies
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堀内 昶
京大・基研
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HORIUCHI Hisashi
Department of Physics, Kyoto University
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Kimura M
Creative Research Initiative "sousei" Hokkaido University
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KIMURA Masaaki
RI-Beam Science Laboratory, RIKEN (The Institute of Physical and Chemical Research)
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Horiuchi Hisashi
Department Of Physics Kyoto University
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Kimura Masaaki
Department Of Physics Kyoto University
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Kimura Masaaki
Ri-beam Science Laboratory Riken (the Institute Of Physical And Chemical Research)
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Kimura Masahiro
Faculty Of Industrial Science And Technology Science University Of Tokyo
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KIMURA Masaaki
Department of Physics, Kyoto University
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KIMURA Masaomi
institute for Cosmic Ray Research, University of Tokyo
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KIMURA Masahiro
Department of Physics, Osaka University
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