arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1902.09156nucl-th
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基于Quartet模型的Alpha聚类

Alpha Clustering from the Quartet Model

Dong Bai, Zhongzhou Ren, Gerd Röpke

摘要:

用四重态模型(QM)研究了原子核中的α成团,其中四个价核子(四重态)在核(子核)的顶部运动。在量子力学方法中,假设四重态的内禀波函数在穿过某一临界半径进入核心核时,从纯团簇组态转变为壳模型组态。量子力学方法不仅能给出能级方案、电磁跃迁、核半径,而且能给出α-团簇形成几率。数值结果计算${}^{20}$ Ne,${}^{44}$ Ti,和${}^{212}$ Po,其中一个四重移动的双魔核的顶部。与实验数据和以前的理论研究得到了很好的一致性。QM方法是一个有用的补充,目前的唯象和微观模型,可以帮助我们加深理解的α聚类的核素图。

英文摘要:

Alpha clustering in nuclei is considered with the quartet model (QM) where four valence nucleons (the quartet) move on the top of the core (daughter) nucleus. In the QM approach, it is assumed that the intrinsic wave function of the quartet is changed from the pure cluster configuration to the shell-model configuration when it crosses some critical radius and enters into the core nucleus. The QM approach could give not only the level scheme, the electromagnetic transition, the nuclear radius, but also the alpha-cluster formation probability. Numerical results are calculated for ${}^{20}$Ne, ${}^{44}$Ti, and ${}^{212}$Po, where a quartet moves on top of a double magic nucleus. Good agreement with experimental data and previous theoretical studies is obtained. The QM approach is a useful complement to the present phenomenological and microscopic models and could help deepen our understanding of alpha clustering across the nuclide chart.

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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