Deformation and Clustering in Even-Z Nuclei Up to Mg Studied Using AMD with the Gogny Force

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概要

• 論文の詳細を見る

• Employing the Gogny force as an effective force, we study the ground state properties of light nuclei using antisymmetrized molecular dynamics (AMD). In a previous paper, we discussed the nuclear binding energies and nuclear radii of He, Be, C, O, Ne and Mg isotopes. In this paper, we mainly consider the deformation properties and the clustering nature of these isotopes. By comparing the calculated results with the AMD results by use of the Skyrme-III(SIII) force, we investigated the differences and similarities between the SIII force and the Gogny force. We find that the Gogny force yields rather better binding energy and larger deformation than the SIII force. We carry out the parity-projected calculations. Parity projection enhances the parity-violating deformation and the cluster structure of certain nuclei. Shape of the deformation energy surface is also changed by parity projection. This causes a competition between the mean-field-like structure and the cluster-like structure. A modified version of AMD, which employs deformed Gaussian wave packets instead of spherical ones, is shown to give large quadrupole moments in the case of Mg isotopes.

• 理論物理学刊行会の論文
• 2001-12-25

著者

• 堀内 昶

  Research Center For Nuclear Physics Osaka University:international Institute For Advanced Studies

• KIMURA Masaaki

  Department of Mechanical and System Engineering, University of Hyogo

• HORIUCHI Hisashi

  Department of Physics, Kyoto University

• Kimura M

  Creative Research Initiative "sousei" Hokkaido University

• KIMURA Masaaki

  RI-Beam Science Laboratory, RIKEN (The Institute of Physical and Chemical Research)

• SUGAWA Yoshio

  Department of Physics, Kyoto University

• Horiuchi Hisashi

  Department Of Physics Kyoto University

• Sugawa Yoshio

  Physics Department Kyoto University

• Kimura Masaaki

  Department Of Marine Sciences University Of The Ryukyus

• Kimura Masaaki

  Department Of Physics Kyoto University

• Kimura Masahiro

  Faculty Of Industrial Science And Technology Science University Of Tokyo

• KIMURA Masaaki

  Department of Physics, Kyoto University

• KIMURA Masaomi

  institute for Cosmic Ray Research, University of Tokyo

• KIMURA Masahiro

  Department of Physics, Osaka University

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