arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1407.3560nucl-thnucl-ex
收藏

$^{26}$ O中2-$^+$态的三体模型计算

Three-body model calculation of the 2$^+$ state in $^{26}$O

K. Hagino, H. Sagawa

摘要:

本文用三体模型$^{24}$ O+ $n$ + $n$讨论了未结合核$^{26}$ O中2 $^+$激发态的能量.该模型充分考虑了价中子的连续效应和双中子关联。目前的计算得出的能量为1.354 MeV,略小于未扰动能量1.54 MeV。基态和2个$^+$态相对于未微扰能量的能量移动表明,$^{26}$ O中的0个$^+$和2个$^+$态显示出一个典型的光谱,该光谱很好地描述了作用在同一轨道上的两个价核子上的短程配对相互作用。

英文摘要:

We discuss the energy of the excited 2$^+$ state in the unbound nucleus $^{26}$O using the three-body model of $^{24}$O+$n$+$n$. This model fully takes into account the continuum effects as well as the dineutron correlation of the valence neutrons. The present calculation yields the energy of 1.354 MeV, which is slightly smaller than the unperturbed energy, 1.54 MeV. The energy shifts for the ground and the 2$^+$ states with respect to the unperturbed energy suggest that 0$^+$ and the 2$^+$ states in $^{26}$O show a typical spectrum well described by a short-range pairing interaction acting on two valence nucleons in the same orbit.

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。

↑