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arXiv 1003.0452nucl-ex
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质子滴线处的形状共存:180 Pb中激发态的首次识别

Shape coexistence at the proton drip-line: First identification of excited states in 180Pb

P. Rahkila, D. G. Jenkins, J. Pakarinen, C. Gray-Jones, P. T. Greenlees, U. Jakobsson, P. Jones, R. Julin, S. Juutinen, S. Ketelhut, H. Koivisto, M. Leino, P. N… 展开作者

P. Rahkila, D. G. Jenkins, J. Pakarinen, C. Gray-Jones, P. T. Greenlees, U. Jakobsson, P. Jones, R. Julin, S. Juutinen, S. Ketelhut, H. Koivisto, M. Leino, P. Nieminen, M. Nyman, P. Papadakis, S. Paschalis, M. Petri, P. Peura, O. J. Roberts, T. Ropponen, P. Ruotsalainen, J. Saren, C. Scholey, J. Sorri, A. G. Tuff, J. Uusitalo, R. Wadsworth, M. Bender, P. -H. Heenen

摘要:

在于韦斯屈莱大学加速器实验室,利用JUROGAM II阵列和RITU反冲分离器,首次确定了极缺中子核180 Pb的激发态。这项研究是在什么是目前可实现的束内光谱的限制,与92钼(90锆,2n)180铅反应的估计横截面只有10铌。在182 Pb和184 Pb中观察到的趋势的延续被认为是,其中长扁形最小值继续上升超过N=104中壳相对于球形基态。超出平均场的计算是在合理的对应关系从实验中推导出的趋势。

英文摘要:

Excited states in the extremely neutron-deficient nucleus, 180Pb, have been identified for the first time using the JUROGAM II array in conjunction with the RITU recoil separator at the Accelerator Laboratory of the University of Jyvaskyla. This study lies at the limit of what is presently achievable with in-beam spectroscopy, with an estimated cross-section of only 10 nb for the 92Mo(90Zr,2n)180Pb reaction. A continuation of the trend observed in 182Pb and 184Pb is seen, where the prolate minimum continues to rise beyond the N=104 mid-shell with respect to the spherical ground state. Beyond mean-field calculations are in reasonable correspondence with the trends deduced from experiment.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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