dorsal/arxiv
View SchemaSuperdeformation and clustering in $^{40}$Ca studied with Antisymmetrized Molecular Dynamics
| Authors | Y. Kanada-En'yo, M. Kimura |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0510046 |
| URL | https://arxiv.org/abs/nucl-th/0510046 |
| DOI | 10.1103/PhysRevC.72.064322 |
| Journal | Phys.Rev. C72 (2005) 064322 |
Abstract
Deformed states in $^{40}$Ca are investigated with a method of antisymmetrized molecular dynamics. Above the spherical ground state, rotational bands arise from a normal deformation and a superdeformation as well as an oblate deformation. The calculated energy spectra and $E2$ transition strengths in the superdeformed band reasonably agree to the experimental data of the superdeformed band starting from the $0^+_3$ state at 5.213 MeV. By the analysis of single-particle orbits, it is found that the superdeformed state has particle-hole nature of an $8p$-$8h$ configuration. One of new findings is parity asymmetric structure with $^{12}$C+$^{28}$Si-like clustering in the superdeformed band. We predict that $^{12}$C+$^{28}$Si molecular bands may be built above the superdeformed band due to the excitation of inter-cluster motion. They are considered to be higher nodal states of the superdeformed state. We also suggest negative-parity bands caused by the parity asymmetric deformation.
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"abstract": "Deformed states in $^{40}$Ca are investigated with a method of\nantisymmetrized molecular dynamics. Above the spherical ground state,\nrotational bands arise from a normal deformation and a superdeformation as well\nas an oblate deformation. The calculated energy spectra and $E2$ transition\nstrengths in the superdeformed band reasonably agree to the experimental data\nof the superdeformed band starting from the $0^+_3$ state at 5.213 MeV. By the\nanalysis of single-particle orbits, it is found that the superdeformed state\nhas particle-hole nature of an $8p$-$8h$ configuration. One of new findings is\nparity asymmetric structure with $^{12}$C+$^{28}$Si-like clustering in the\nsuperdeformed band. We predict that $^{12}$C+$^{28}$Si molecular bands may be\nbuilt above the superdeformed band due to the excitation of inter-cluster\nmotion. They are considered to be higher nodal states of the superdeformed\nstate. We also suggest negative-parity bands caused by the parity asymmetric\ndeformation.",
"arxiv_id": "nucl-th/0510046",
"authors": [
"Y. Kanada-En\u0027yo",
"M. Kimura"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.72.064322",
"journal_ref": "Phys.Rev. C72 (2005) 064322",
"title": "Superdeformation and clustering in $^{40}$Ca studied with Antisymmetrized Molecular Dynamics",
"url": "https://arxiv.org/abs/nucl-th/0510046"
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