Study of exotic deformed high-spin states in nuclei

原子核中奇异变形高自旋态的研究

• 批准号: 22540285
• 负责人: SHIMIZU Yoshifumi
• 金额: $ 2.25万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22540285/
• 关键词: エキゾチック変形; 正四面体変形; 原子核高スピン状態; 量子数射影法; 角運動量とパリティの同時射影; エキゾチック回転状態; 角運動量射影; パリティ射影; 高スピン原子核状態; 正四面体型変形; 量子数射影計算; 正四面体変形状態

In this project, the exotic deformation and its associated collective rotational excitations have been studied up to the high-spin states. As for the exotic deformation we focused on the tetrahedral deformation, which has one of the higher point-group symmetries and is very different from the usual quadrupole deformation (elliptic shape). It was predicted that a very characteristic quantum mechanical spectrum appears for the tetrahedrally-symmetric deformed nucleus. We have, for the first time, succeeded to show that such a characteristic spectrum indeed emerges in tetrahedrally-deformed nuclei by employing fully microscopic quantum-number-projection calculation, i.e., by angular momentum, number, and parity projections at the same time. Although the tetrahedrally-deformed nuclear states have not yet confirmed experimentally, it can be expected that the present result gives an important clue for the future study of this interesting exotic deformation.

在这个项目中，已经研究了高自旋状态的外来变形及其相关的集体旋转激励。至于外来变形，我们专注于四面体变形，该变形具有较高的点组对称性之一，与通常的四极变形（椭圆形）大不相同。据预测，四面体对称变形核出现了非常特征的量子机械光谱。我们首次成功地证明了这种特征频谱确实通过使用完全显微镜量子量指定计算，即，即通过角度动量，数量，数量和奇偶校验预测。尽管四面体形成的核电尚未通过实验确认，但可以预见，目前的结果为未来对这种有趣的外来变形的研究提供了重要的线索。

项目成果

Ground-state properties of neutron-rich Mg isotopes

富中子镁同位素的基态性质

• DOI: 10.1103/physrevc.89.044610
• 发表时间: 2014
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: S. Watanabe;K. Minomo;M. Shimada;S. Tagami;M. Kimura;M. Takechi;M. Fukuda;D. Nishimura;T. Suzuki;T. Matsumoto;Y. R. Shimizu;and M. Yahiro
• 通讯作者: and M. Yahiro

量子数射影による四面体変形核の分析ー四面体群のスペクトルとの比較

量子数投影分析四面体变形核——与四面体群光谱的比较

• 发表时间: 2013
• 作者: 田上真伍,清水良文;J. Dudek
• 通讯作者: J. Dudek

Microscopic study of tetrahedrally symmetric nuclei by an angular-momentum and parity projection method

• DOI: 10.1103/physrevc.87.054306
• 发表时间: 2013-01
• 期刊: Physical Review C
• 影响因子: 3.1
• 作者: S. Tagami;Y. Shimizu;J. Dudek

Exotic Geometrical Symmetries in nuclei : From Group Theory to Experiments

原子核中奇异的几何对称性：从群论到实验

• 发表时间: 2012
• 作者: J. Dudek;D. Curien;A. G´o´zd´z;Y. R. Shimizu;and S. Tagami
• 通讯作者: and S. Tagami

Study of Rapidly Rotating Nuclei

快速旋转原子核的研究

• 发表时间: 2010
• 作者: S. Tagami;Y. R. Shimizu;and J. Dudek;Koji Harada;Antonios Tsokaros;清水良文
• 通讯作者: 清水良文