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Title: Superdeformation and clustering in {sup 40}Ca studied with antisymmetrized molecular dynamics

Abstract

Deformed states in {sup 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{sub 3}{sup +} 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 {sup 12}C+{sup 28}Si-like clustering in the superdeformed band. We predict that {sup 12}C+{sup 28}Si molecular bands may be built above the superdeformed band due to the excitation of intercluster 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.

Authors:
;  [1]
  1. Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)
Publication Date:
OSTI Identifier:
20771098
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 72; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.72.064322; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ASYMMETRY; CALCIUM 40; CARBON 12; E2-TRANSITIONS; ENERGY SPECTRA; EXCITATION; GROUND STATES; MEV RANGE; MOLECULAR DYNAMICS METHOD; NUCLEAR DEFORMATION; PARITY; PARTICLE-HOLE MODEL; ROTATIONAL STATES; SILICON 28; SINGLE-PARTICLE MODEL; SUPERDEFORMED NUCLEI

Citation Formats

Kanada-En'yo, Y., and Kimura, M.. Superdeformation and clustering in {sup 40}Ca studied with antisymmetrized molecular dynamics. United States: N. p., 2005. Web. doi:10.1103/PhysRevC.72.064322.
Kanada-En'yo, Y., & Kimura, M.. Superdeformation and clustering in {sup 40}Ca studied with antisymmetrized molecular dynamics. United States. doi:10.1103/PhysRevC.72.064322.
Kanada-En'yo, Y., and Kimura, M.. Thu . "Superdeformation and clustering in {sup 40}Ca studied with antisymmetrized molecular dynamics". United States. doi:10.1103/PhysRevC.72.064322.
@article{osti_20771098,
title = {Superdeformation and clustering in {sup 40}Ca studied with antisymmetrized molecular dynamics},
author = {Kanada-En'yo, Y. and Kimura, M.},
abstractNote = {Deformed states in {sup 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{sub 3}{sup +} 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 {sup 12}C+{sup 28}Si-like clustering in the superdeformed band. We predict that {sup 12}C+{sup 28}Si molecular bands may be built above the superdeformed band due to the excitation of intercluster 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.},
doi = {10.1103/PhysRevC.72.064322},
journal = {Physical Review. C, Nuclear Physics},
number = 6,
volume = 72,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}