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arXiv 0903.0171nucl-th
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核形变对能级统计的影响

The effect of nuclear deformation on level statistics

A. Al-Sayed

摘要:

本文分析了偶偶核2+低位能级的最近邻间距分布。我们将原子核分为由四极形变参数(Beta2)定义的类别。我们计算每个类的最近邻间距分布。然后,我们确定的混沌参数的帮助下,每个类的贝叶斯推断方法。我们比较这些分布的一个公式,描述了通过改变调谐参数过渡到混沌。这个参数似乎依赖于在一个非平凡的方式对核变形,并采取小的值表示规则性在强烈变形的核,特别是在那些具有扁圆形变形。

英文摘要:

We analyze the nearest neighbor spacing distributions of low-lying 2+ levels of even-even nuclei. We grouped the nuclei into classes defined by the quadrupole deformation parameter (Beta2). We calculate the nearest neighbor spacing distributions for each class. Then, we determine the chaoticity parameter for each class with the help of the Bayesian inference method. We compare these distributions to a formula that describes the transition to chaos by varying a tuning parameter. This parameter appears to depend in a non-trivial way on the nuclear deformation, and takes small values indicating regularity in strongly deformed nuclei and especially in those having an oblate deformation.

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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