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《中国物理C》（英文）编辑部
2024年10月30日
Chinese Physics C> 2004, Vol. 28> Issue(S1) : 11-15 

High-Spin Excitations of Atomic Nuclei

  •  MOE Key Laboratory, School of Physics, Peking University , Beijing 100871, ChinaCenter of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Physics, Lanzhou 730000, ChinaInstitute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China

  • We used the cranking shell model to investigate the high-spin motions and structures of atomic nuclei. We focus the collective rotations of the A～50, 80 and 110 nuclei. The A～50 calculations show complicated g spectroscopy, which can have significant vibration effects. The A≈80 N≈Z nuclei show rich shape coexistences with prolate and oblate rotational bands. The A≈110 nuclei near the r-process path can have well-deformed oblate shapes that become yrast and more stable with increasing rotational frequency. As another important investigation, we used the configuration-constrained adiabatic method to calculate the multi-quasiparticle high-K states in the A～130, 180 and superheavy regions. The calculations show significant shape polarizations due to quasi-particle excitations for soft nuclei, which should be considered in the investigations of high-K states. We predicted some important high-K isomers, e.g., the 8－ isomers in the unstable nuclei of 140Dy and 188Pb, which have been confirmed in experiments. In superheavy nuclei, our calculations show systematic existence of high-K states. The high-K excitations can increase the productions of synthesis and the survival probabilities of superheavy nuclei.
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XU Fu-Rong. High-Spin Excitations of Atomic Nuclei[J]. Chinese Physics C, 2004, 28(S1): 11-15.
XU Fu-Rong. High-Spin Excitations of Atomic Nuclei[J]. Chinese Physics C, 2004, 28(S1): 11-15. shu
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Received: 2004-12-30
Revised: 1900-01-01
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High-Spin Excitations of Atomic Nuclei

    Corresponding author: XU Fu-Rong,
  • MOE Key Laboratory, School of Physics, Peking University , Beijing 100871, ChinaCenter of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Physics, Lanzhou 730000, ChinaInstitute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China
  • Received Date: 2004-12-30
  • Accepted Date: 1900-01-01
  • Available Online: 2004-04-02

Abstract: We used the cranking shell model to investigate the high-spin motions and structures of atomic nuclei. We focus the collective rotations of the A～50, 80 and 110 nuclei. The A～50 calculations show complicated g spectroscopy, which can have significant vibration effects. The A≈80 N≈Z nuclei show rich shape coexistences with prolate and oblate rotational bands. The A≈110 nuclei near the r-process path can have well-deformed oblate shapes that become yrast and more stable with increasing rotational frequency. As another important investigation, we used the configuration-constrained adiabatic method to calculate the multi-quasiparticle high-K states in the A～130, 180 and superheavy regions. The calculations show significant shape polarizations due to quasi-particle excitations for soft nuclei, which should be considered in the investigations of high-K states. We predicted some important high-K isomers, e.g., the 8－ isomers in the unstable nuclei of 140Dy and 188Pb, which have been confirmed in experiments. In superheavy nuclei, our calculations show systematic existence of high-K states. The high-K excitations can increase the productions of synthesis and the survival probabilities of superheavy nuclei.

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