Shell and Neutron-Skin Effects on Pygmy Dipole Resonances(YKIS2011 papers, Frontier Issues in Physics of Exotic Nuclei)
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概要
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We have performed a systematic calculation of low-lying dipole responses for even-even nuclei, up to zirconium isotopes including deformed nuclei within the fully self-consistent random phase approximation using the Skyrme interaction. We found the low-lying peaks in the dipole strength, so-called the pygmy dipole resonance (PDR), in every isotopic chain. The E1 strength of the PDR strongly depends on the position of the neutron Fermi level and shows a clear correlation with the occupation of the orbits with low orbital angular momenta (low-l). We also found a strong correlation between the neutron skin thickness and the pygmy dipole strength in the region where the neutron Fermi levels are located at low-l orbits.
- 2012-10-22
著者
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Yabana Kazuhiro
Institute Of Physics University Of Tsukuba:center For Computational Sciences University Of Tsukuba
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Nakatsukasa Takashi
Theoretical Nuclear Physics Laboratory Riken Nishina Center
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Nakatsukasa Takashi
Institute Of Physics University Of Tsukuba:center For Computational Sciences University Of Tsukuba
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Inakura Tsunenori
Institute Of Physics University Of Tsulcuba
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INAKURA Tsunenori
Theoretical Nuclear Physics Laboratory, RIKEN Nishina Center
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YABANA Kazuhiro
Center for Computational Sciences, University of Tsukuba
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YABANA Kazuhiro
Center for Computational Sciences, University of Tsukuba:Theoretical Nuclear Physics Laboratory, RIKEN Nishina Center
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- Shell and Neutron-Skin Effects on Pygmy Dipole Resonances(YKIS2011 papers, Frontier Issues in Physics of Exotic Nuclei)
- Microscopic Analysis of Shape Coexistence/Mixing and Shape Phase Transition in Neutron-Rich Nuclei around ^Mg(YKIS2011 papers, Frontier Issues in Physics of Exotic Nuclei)
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