...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical Review C >Understanding emergent collectivity and clustering in nuclei from a symmetry-based no-core shell-model perspective
【24h】

Understanding emergent collectivity and clustering in nuclei from a symmetry-based no-core shell-model perspective

机译：从基于对称的无核心壳模型视角来了解核的紧急集群和聚类

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We present a detailed discussion of the structure of the low-lying positive-parity energy spectrum of ~(12)C from a no-core shell-model perspective. The approach utilizes a fraction of the usual shell-model space and extends its multishell reach via the symmetry-based no-core symplectic shell model (NCSpM) with a simple, physically informed effective interaction. We focus on the ground-state rotational band, the Hoyle state, and its 2~+ and 4~+ excitations, as well as the giant monopole 0~+ resonance, which is a vibrational breathing mode of the ground state. This, in turn, allows us to address the open question about the structure of the Hoyle state and its rotational band. In particular, we find that the Hoyle state is best described through deformed prolate collective modes rather than vibrational modes, while we show that the higher lying giant monopole 0~+ resonance resembles the oblate deformation of the ~(12)C ground state. In addition, we identify the giant monopole 0~+ and quadrupole 2~+ resonances of selected light- and intermediate-mass nuclei, along with other observables of ~(12)C, including matter rms radii, electric quadrupole moments, and E2 and E0 transition rates.
机译：我们从No-Core壳模型角度看，对〜（12）C的低位正奇偶校验能谱结构的详细讨论。该方法利用通常的壳模型空间的一小部分，并通过简单，物理上通知的有效交互扩展其MultiShell jail。我们专注于地态旋转频段，霍健状态及其2〜+和4〜+激励，以及巨大的单极0〜+共振，这是地面振动的呼吸模式。反过来，这使我们能够解决关于霍伊尔状态的结构及其旋转频段的开放问题。特别是，我们发现Hoyle状态最好通过变形的聚集集体模式而不是振动模式来描述，而我们表明较高的狭窄巨型单极0〜+共振类似于〜（12）C地位的扁平变形。此外，我们鉴定了所选光和中质核的巨型单孔0〜+和四极2〜+共振，以及其他可观察到的〜（12）c，包括物质RMS半径，电动四极矩和E2和E2 E0过渡率。

著录项

  • 来源
    《Physical Review C》 |2017年第2017期|044312.1-044312.12|共12页
  • 作者

    A. C. Dreyfuss; K. D. Launey; T. Dytrych; J. P. Draayer; R. B. Baker; C. M. Deibel; C. Bahri;

  • 作者单位

    Department of Physics and Astronomy Louisiana State University Baton Rouge Louisiana 70803 USA;

    Department of Physics and Astronomy Louisiana State University Baton Rouge Louisiana 70803 USA;

    Department of Physics and Astronomy Louisiana State University Baton Rouge Louisiana 70803 USA Nuclear Physics Institute Academy of Sciences of the Czech Republic 250 68 Rez Czech Republic;

    Department of Physics and Astronomy Louisiana State University Baton Rouge Louisiana 70803 USA;

    Department of Physics and Astronomy Louisiana State University Baton Rouge Louisiana 70803 USA;

    Department of Physics and Astronomy Louisiana State University Baton Rouge Louisiana 70803 USA;

    Department of Physics and Astronomy Louisiana State University Baton Rouge Louisiana 70803 USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号