Structure of exotic nuclei by large-scale shell model calculations

Journal Article · Thu Nov 02 04:00:00 EST 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2398835· OSTI ID:20891713

Utsuno, Yutaka ^[1]; Otsuka, Takaharu ^[2]; Mizusaki, Takahiro ^[3]; Honma, Michio ^[4]

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1. Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan)
2. Department of Physics, University of Tokyo, Hongo, Tokyo 113-0033 (Japan)
3. Institute of Natural Sciences, Senshu University, Higashimita, Tama, Kawasaki, Kanagawa 214-8580 (Japan)
4. Center for Mathematical Sciences, University of Aizu, Tsuruga, Ikki-machi Aizu-Wakamatsu, Fukushima 965-8580 (Japan)

An extensive large-scale shell-model study is conducted for unstable nuclei around N = 20 and N = 28, aiming to investigate how the shell structure evolves from stable to unstable nuclei and affects the nuclear structure. The structure around N = 20 including the disappearance of the magic number is reproduced systematically, exemplified in the systematics of the electromagnetic moments in the Na isotope chain. As a key ingredient dominating the structure/shell evolution in the exotic nuclei from a general viewpoint, we pay attention to the tensor force. Including a proper strength of the tensor force in the effective interaction, we successfully reproduce the proton shell evolution ranging from N = 20 to 28 without any arbitrary modifications in the interaction and predict the ground state of 42Si to contain a large deformed component.

• OSTI ID: 20891713
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 865; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DEFORMED NUCLEI
EVOLUTION
GROUND STATES
NUCLEAR MAGNETIC MOMENTS
NUCLEAR STRUCTURE
PROTONS
SHELL MODELS
SILICON 42
SODIUM ISOTOPES
TENSOR FORCES