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Article Navigation >  Nuclear Physics Review  > 2018  >  35(3): 243-249

ZHOU Houbing, HUANG Shan, DONG Guoxiang, SHEN Zixu, LU Huijin, WANG Lele, SUN Xiaojun, XU Furong. Evidence for Rotational to Vibrational Evolution Along the Yrast Line in the Odd-A Rare-earth Nuclei[J]. Nuclear Physics Review, 2018, 35(3): 243-249. doi: 10.11804/NuclPhysRev.35.03.243
Citation: ZHOU Houbing, HUANG Shan, DONG Guoxiang, SHEN Zixu, LU Huijin, WANG Lele, SUN Xiaojun, XU Furong. Evidence for Rotational to Vibrational Evolution Along the Yrast Line in the Odd-A Rare-earth Nuclei[J]. Nuclear Physics Review, 2018, 35(3): 243-249. doi: 10.11804/NuclPhysRev.35.03.243
shu

Evidence for Rotational to Vibrational Evolution Along the Yrast Line in the Odd-A Rare-earth Nuclei

doi: 10.11804/NuclPhysRev.35.03.243
  • 1.

    Department of Physics, Guangxi Normal University, Guilin 541004, Guangxi, China;

  • 2.

    Guangxi Key Laboratory Breeding Base of Nuclear Physics and Technology, Guangxi Normal University, Guilin 541004, Guangxi, China;

  • 3.

    School of Science, Huzhou University, Huzhou 313000, Zhejiang, China;

  • 4.

    School of Physics and SK Laboratory of Nuclear Physics & Technology, Peking University, Beijing 100871, China

Funds:  National Natural Science Foundation of China (11505035, 11465005, 11505056, 11605054, 11675266, U1732138, 11775057, 11765004, 11565008); Natural Science Foundation of Guangxi, China (2017GXNSFAA198160, 2015GXNSFDA139004); Project of Innovative Team and Distinguished Scholar in Institutions of Higher Education of Guangxi, China
  • Received Date: 2018-05-23
  • Rev Recd Date: 2018-06-22
  • Publish Date: 2018-09-20
  • The phase transition of nuclei with increasing angular momentum (or spin) and excitation energy is one of the most fundamental topics of nuclear structure research. The odd-N nuclei with A ≈160 are widely considered belonging to the well-deformed region, and their excitation spectra are energetically favored to exhibit the rotational characteristics. In this work, however, the evidence suggesting that the nuclei changes from rotation to vibration along the yrast lines as a function of spin was found. The simple method, named as E-Gamma Over Spin (E-GOS) curves, would be used to discern the evolution from rotational to vibrational structure in nuclei for various spin ranges. Meanwhile, in order to understand the band structure properties of nuclei, theoretical calculations have been performed for the yrast bands of the odd-A rare-earth nuclei within the framework of the total routhian surface (TRS) model. The TRS plots predict that the 165Yb and 157Dy isotopes have large quadrupole shapes at low spin states. At higher rotational frequency (hω~ >0.50 MeV), a clear reduction of the quadrupole deformation is indicated by the present results, and the isotopes become rigid in the γ deformation.
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Evidence for Rotational to Vibrational Evolution Along the Yrast Line in the Odd-A Rare-earth Nuclei

doi: 10.11804/NuclPhysRev.35.03.243
  • 1. Department of Physics, Guangxi Normal University, Guilin 541004, Guangxi, China;
  • 2. Guangxi Key Laboratory Breeding Base of Nuclear Physics and Technology, Guangxi Normal University, Guilin 541004, Guangxi, China;
  • 3. School of Science, Huzhou University, Huzhou 313000, Zhejiang, China;
  • 4. School of Physics and SK Laboratory of Nuclear Physics & Technology, Peking University, Beijing 100871, China
Funds:  National Natural Science Foundation of China (11505035, 11465005, 11505056, 11605054, 11675266, U1732138, 11775057, 11765004, 11565008); Natural Science Foundation of Guangxi, China (2017GXNSFAA198160, 2015GXNSFDA139004); Project of Innovative Team and Distinguished Scholar in Institutions of Higher Education of Guangxi, China
  • Received Date: 2018-05-23
  • Rev Recd Date: 2018-06-22
  • Publish Date: 2018-09-20

Abstract: The phase transition of nuclei with increasing angular momentum (or spin) and excitation energy is one of the most fundamental topics of nuclear structure research. The odd-N nuclei with A ≈160 are widely considered belonging to the well-deformed region, and their excitation spectra are energetically favored to exhibit the rotational characteristics. In this work, however, the evidence suggesting that the nuclei changes from rotation to vibration along the yrast lines as a function of spin was found. The simple method, named as E-Gamma Over Spin (E-GOS) curves, would be used to discern the evolution from rotational to vibrational structure in nuclei for various spin ranges. Meanwhile, in order to understand the band structure properties of nuclei, theoretical calculations have been performed for the yrast bands of the odd-A rare-earth nuclei within the framework of the total routhian surface (TRS) model. The TRS plots predict that the 165Yb and 157Dy isotopes have large quadrupole shapes at low spin states. At higher rotational frequency (hω~ >0.50 MeV), a clear reduction of the quadrupole deformation is indicated by the present results, and the isotopes become rigid in the γ deformation.

ZHOU Houbing, HUANG Shan, DONG Guoxiang, SHEN Zixu, LU Huijin, WANG Lele, SUN Xiaojun, XU Furong. Evidence for Rotational to Vibrational Evolution Along the Yrast Line in the Odd-A Rare-earth Nuclei[J]. Nuclear Physics Review, 2018, 35(3): 243-249. doi: 10.11804/NuclPhysRev.35.03.243
Citation: ZHOU Houbing, HUANG Shan, DONG Guoxiang, SHEN Zixu, LU Huijin, WANG Lele, SUN Xiaojun, XU Furong. Evidence for Rotational to Vibrational Evolution Along the Yrast Line in the Odd-A Rare-earth Nuclei[J]. Nuclear Physics Review, 2018, 35(3): 243-249. doi: 10.11804/NuclPhysRev.35.03.243
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