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理论预测超重核274-291Cn和266-287Ds的衰变模式

赵天亮,  包小军

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文章导航 > 原子核物理评论  > 2018 >  35(4): 455-462
赵天亮, 包小军. 理论预测超重核274-291Cn和266-287Ds的衰变模式[J]. 原子核物理评论, 2018, 35(4): 455-462. doi: 10.11804/NuclPhysRev.35.04.455
引用本文: 赵天亮, 包小军. 理论预测超重核274-291Cn和266-287Ds的衰变模式[J]. 原子核物理评论, 2018, 35(4): 455-462. doi: 10.11804/NuclPhysRev.35.04.455
shu
ZHAO Tianliang, BAO Xiaojun. Theoretical Descriptions of Decay Modes in 274-291Cn and 266-287Ds Superheavy Nuclei[J]. Nuclear Physics Review, 2018, 35(4): 455-462. doi: 10.11804/NuclPhysRev.35.04.455
Citation: ZHAO Tianliang, BAO Xiaojun. Theoretical Descriptions of Decay Modes in 274-291Cn and 266-287Ds Superheavy Nuclei[J]. Nuclear Physics Review, 2018, 35(4): 455-462. doi: 10.11804/NuclPhysRev.35.04.455
shu

理论预测超重核274-291Cn和266-287Ds的衰变模式

doi: 10.11804/NuclPhysRev.35.04.455

  • 湖南师范大学物理系, 长沙 410081

基金项目: 国家自然科学基金资助项目（11705055，11475050）；湖南省自然科学基金资助项目（2018JJ3324）；湖南省教育厅优秀青年基金资助项目（17B154）
详细信息

  • 中图分类号: O571.2

Theoretical Descriptions of Decay Modes in 274-291Cn and 266-287Ds Superheavy Nuclei

  • Department of Physics, Collaborative Innovation Center for Quantum Effects, and Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education, Hunan Normal University, Changsha 410081, China

Funds: National Natural Science Foundation of China (11705055, 11475050); Hunan Provincial Natural Science Foundation of China (2018JJ3324); Excellent Youth Fund of Hunan Provincial Education Department (17B154)

  • 摘要: 自发裂变和α衰变是影响超重核稳定性的两个主要因素。为了探索270Ds附近的长寿命的超重核，系统地计算了电荷数在104 ≤ Z ≤ 112范围内的α衰变与自发裂变之间的竞争。采用推广的液滴模型和唯象的解析公式计算了α衰变半衰期。基于包括壳效应和同位旋效应的WKB近似方法估算了相同超重核的自发裂变半衰期，进而预测了未知超重核274-276，279Cn与267-269Ds的衰变模式。


    The stability of superheavy nuclei (SHN) is controlled mainly by spontaneous fission and α decay processes. To investigate whether long lived SHN could really exist around 270Ds, the competition between α decay and spontaneous fission in the region 104 ≤ Z ≤ 112 are studied systematically. The α decay half-lives are investigated by employing a generalized liquid drop model (GLDM) and phenomenological analytical formula. Calculations of spontaneous fission half-lives for the same SHN are carried out based on the Wenzel-Kramers-Brillouin(WKB) approximation with both the shell effect and the isospin effect included. Decay modes are predicted for the unknown nuclei 274-276,279Cn and 267-269Ds.
    Abstract: The stability of superheavy nuclei (SHN) is controlled mainly by spontaneous fission and α decay processes. To investigate whether long lived SHN could really exist around 270Ds, the competition between α decay and spontaneous fission in the region 104 ≤ Z ≤ 112 are studied systematically. The α decay half-lives are investigated by employing a generalized liquid drop model (GLDM) and phenomenological analytical formula. Calculations of spontaneous fission half-lives for the same SHN are carried out based on the Wenzel-Kramers-Brillouin(WKB) approximation with both the shell effect and the isospin effect included. Decay modes are predicted for the unknown nuclei 274-276,279Cn and 267-269Ds.
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出版历程
  • 收稿日期:  2018-09-12
  • 修回日期:  2018-12-05
  • 刊出日期:  2020-05-03

理论预测超重核274-291Cn和266-287Ds的衰变模式

doi: 10.11804/NuclPhysRev.35.04.455
  • 湖南师范大学物理系, 长沙 410081
    • 基金项目:  国家自然科学基金资助项目（11705055，11475050）；湖南省自然科学基金资助项目（2018JJ3324）；湖南省教育厅优秀青年基金资助项目（17B154）
  • 收稿日期: 2018-09-12
  • 修回日期: 2018-12-05
  • 刊出日期: 2020-05-03

  • 中图分类号: O571.2

摘要: 自发裂变和α衰变是影响超重核稳定性的两个主要因素。为了探索270Ds附近的长寿命的超重核，系统地计算了电荷数在104 ≤ Z ≤ 112范围内的α衰变与自发裂变之间的竞争。采用推广的液滴模型和唯象的解析公式计算了α衰变半衰期。基于包括壳效应和同位旋效应的WKB近似方法估算了相同超重核的自发裂变半衰期，进而预测了未知超重核274-276，279Cn与267-269Ds的衰变模式。


The stability of superheavy nuclei (SHN) is controlled mainly by spontaneous fission and α decay processes. To investigate whether long lived SHN could really exist around 270Ds, the competition between α decay and spontaneous fission in the region 104 ≤ Z ≤ 112 are studied systematically. The α decay half-lives are investigated by employing a generalized liquid drop model (GLDM) and phenomenological analytical formula. Calculations of spontaneous fission half-lives for the same SHN are carried out based on the Wenzel-Kramers-Brillouin(WKB) approximation with both the shell effect and the isospin effect included. Decay modes are predicted for the unknown nuclei 274-276,279Cn and 267-269Ds.

English Abstract

赵天亮, 包小军. 理论预测超重核274-291Cn和266-287Ds的衰变模式[J]. 原子核物理评论, 2018, 35(4): 455-462. doi: 10.11804/NuclPhysRev.35.04.455
引用本文: 赵天亮, 包小军. 理论预测超重核274-291Cn和266-287Ds的衰变模式[J]. 原子核物理评论, 2018, 35(4): 455-462. doi: 10.11804/NuclPhysRev.35.04.455
shu
ZHAO Tianliang, BAO Xiaojun. Theoretical Descriptions of Decay Modes in 274-291Cn and 266-287Ds Superheavy Nuclei[J]. Nuclear Physics Review, 2018, 35(4): 455-462. doi: 10.11804/NuclPhysRev.35.04.455
Citation: ZHAO Tianliang, BAO Xiaojun. Theoretical Descriptions of Decay Modes in 274-291Cn and 266-287Ds Superheavy Nuclei[J]. Nuclear Physics Review, 2018, 35(4): 455-462. doi: 10.11804/NuclPhysRev.35.04.455
shu

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