超重核的基态性质 |
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引用本文: | 裴俊琛,许甫荣,吴哲英,赵恩广.超重核的基态性质[J].原子核物理评论,2003,20(2):116-120. |
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作者姓名: | 裴俊琛 许甫荣 吴哲英 赵恩广 |
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作者单位: | 兰州重离子加速器国家实验室原子核理论中心; 北京大学物理学院技术物理系; 中国科学院理论物理研究所 甘肃兰州 730000; |
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基金项目: | 国家自然科学基金资助项目(10175002),国家重大基础研究发展规划资助项目(G2000077400),国家教育部骨干教师基金资助项目,中国科学院知识创新工程重要方向性项目(KJCX2 SW N02) |
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摘 要: | 用Skyrme Hartree Fock+BCS方法计算了超重核的基态性质,讨论了结合能、α衰变、形变、壳结构和自发裂变等问题.计算得到的结合能较好地反映了实验测量值,α衰变能与实验值符合很好.发现基本上有两种类型的超重核形变:在270108核附近的β2≈0.2的长椭球形变和在298114核附近的近球形形变.单粒子能级分布计算表明:在质子Z=108和中子N=162存在变形壳,在质子Z=114和中子N=184存在球形壳.用得到的α衰变能和Viola Seaborg公式估算了α衰变半寿命,能合理地符合实验测量值. The ground state properties of superheavy nuclei are investigated using the Skyrme Hartree Fock model. The pairing correlation is treated by the BCS method with the pairing δ force. Binding energies, α decays, spontaneous fissions, shell structures and deformations are discussed. Our calculations reproduce experimential binding energies and α decay energies.It is found that superheavy nuclei can be grouped with two kinds of deformations: i) well deformed prolate shapes (β2≈0.2) around 270108...
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关 键 词: | 超重核 Skyrme-Hartree-Fock理论 基态性质 衰变 |
文章编号: | 1007-4627(2003)02-0116-05 |
收稿时间: | 1900-01-01 |
修稿时间: | 2003年1月30日 |
Ground-state Properties of Superheavy Nuclei |
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Institution: | Center of Theoretical Nuclear Physics; National Laboratory of Heavy Ion Accelerator of Lanzhou; Lanzhou 730000; China; Department of Technical Physics; School of Physics; Peking University; Beijing 100871; Institute of Theoretical Physics; Chinese Academy of Sciences; Beijing 100080; China |
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Abstract: | The ground state properties of superheavy nuclei are investigated using the Skyrme Hartree Fock model. The pairing correlation is treated by the BCS method with the pairing δ force. Binding energies, α decays, spontaneous fissions, shell structures and deformations are discussed. Our calculations reproduce experimential binding energies and α decay energies.It is found that superheavy nuclei can be grouped with two kinds of deformations: i) well deformed prolate shapes (β2≈0.2) around 270108... |
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Keywords: | superheavy nucleus Skyrme-Hartree-Fock ground-state property decay |
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