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相对论平均场理论对新核素259Db及其α衰变链的研究

Description of the New Nuclide 259Db and Its α-Decay Chain in Relativistic Mean Field Theory

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【作者】 龙文辉孟杰周善贵

【Author】 LONG Wen Hui 1;1) \ MENG Jie 1,2,3;2) \ ZHOU Shan Gui 1,2,3;3) 1 (School of Physics, Peking University, Beijing 100871, China) 2 (Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China) 3 (Center of Theoreti

【机构】 北京大学物理学院北京大学物理学院 北京100871北京100871中国科学院理论物理研究所北京100080兰州重离子加速器国家实验室原子核理论中心兰州730000北京100871中国科学院理论物理研究所北京100080兰州重离子加速器国家实验室原子核理论中心兰州730000

【摘要】 利用相对论平均场理论系统地探讨了新核素2 5 9Db及其α衰变链的性质和结构以及对关联效应与形变效应的影响 .考虑对关联影响后的变形相对论平均场理论成功再现了实验的Qα 并揭示了所研究的α衰变链具有较大的形变 .在此基础上进一步讨论了新核素2 5 9Db及其α衰变链的形变单粒子能级结构

【Abstract】 The new nuclide 259 Db and its α decay chain are systematically studied in the framework of the relativistic mean field (RMF) theory with NL3 and TM1 effective interactions. The nuclide 259 Db and its α decay daughter nuclei are calculated in a RMF framework with and without the pairing correlation. With the pairing gaps obtained from the RCHB, the deformed RMF+BCS has been carried out for these nuclei. It has been found that the DRMF+BCS well reproduces the data and implies that the new nuclide 259 Db and its α decay daughter nuclei are highly deformed. The α decay energy Q α for different channel has been given and it seems that the ground state to ground state Q α values from DRMF+BCS reproduce the data well. Furthermore the single particle levels of the α decay chain are studied carefully and the explanation for the stability is also presented.

【基金】 国家重点基础研究发展规划 (G2 0 0 0 0 7740 7) ;国家自然科学基金 (1 0 0 2 5 5 2 2 ,1 98470 0 2 ,1 993 5 0 3 0 )资助~~
  • 【文献出处】 高能物理与核物理 ,High Energh Physics and Nuclear Physics , 编辑部邮箱 ,2002年08期
  • 【分类号】O571.3
  • 【被引频次】5
  • 【下载频次】88
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