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arXiv 0811.3898nucl-th
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$N\sim90$同位素相变的超平均场计算研究

Study of shape transitions in $N\sim90$ isotopes with beyond mean field calculations

Tomás R. Rodríguez, J. L. Egido

摘要:

我们研究了$^{144-158}$ Sm和$^{146-160}$ Gd同位素的球形到扁长形变的形状转变。我们将计算结果与集体哈密顿模型预测的形状-相变和实验数据进行了比较。我们的计算不支持在这些同位素链中存在一级相变的观点的玻尔哈密顿量,也没有解释的核N=90作为临界点。

英文摘要:

We study the spherical to prolate-deformed shape transition in $^{144-158}$Sm and $^{146-160}$Gd isotopes with modern calculations beyond the mean field with the Gogny D1S force. We compare the results with the shape-phase transition predicted by the collective hamiltonian model and with the experimental data. Our calculations do not support the existence of a first order phase transition in these isotopic chains in the viewpoint of the Bohr hamiltonian neither the interpretation of the nuclei N=90 as critical points.

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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