论文标题
$^{9} $ be $ {}^{9} $ be（$ p，p，pn $）$ {}^{8} $ be oketut Reaction
Manifestation of the divergence between antisymmetrized-molecular-dynamics and container pictures of $^{9}$Be via ${}^{9}$Be($p,pn$)${}^{8}$Be knockout reaction
论文作者
论文摘要
我们提出了一种新方法，以通过$ {}^{9} $ be（$ p，p，pn $）$ {}^{8} $ be lexut反应，探测$^{9} $在$^{9} $中的空间扩展。在先前的实验研究中尚未建立核分子轨道的这种特性，并且从不同的角度来看，$ {}^{9} $的理论描述是从不同的角度来看，\ textit {i.e。}，抗异构分子动力学与集群动力学的容器图片。这些图片由两个不同的良好微观模型表示，即反对称分子动力学（AMD）和Tohsaki-Horiuchi-Schuck-Röpke（THSR）波函数。 $^{8} $ be $+n $通道中相应的减小宽度振幅（RWA）是从AMD和THSR波函数中提取的，并且发现它们可以描述$π$ -Orbitals在$^$^9} $中描述理论上的含糊不清运动，这表明了理论上的歧义。使用RWAS作为输入，$ {}^{9} $的物理观察力Be（$ P，Pn $）$ {}^{8} $ knockout反应由扭曲的波浪脉冲近似值（DWIA）框架预测。发现三分法横截面（TDX）的大小对RWA输入高度敏感。得出的结论是，$ {}^{9} $ be（$ p，pn $）$ {}^{8} $敲除反应可以为通过$^{9} $ nucleus的$π$ -Orbital的空间扩展而表现出的几个结构模型之间的微妙差异提供可行的探测。
We propose a new approach to probe the spatial extension of the valence neutron orbital in the $^{9}$Be nucleus via the ${}^{9}$Be($p,pn$)${}^{8}$Be knockout reaction. This property of the nuclear molecular orbital has not been established in previous experimental studies and divergence exists between the theoretical descriptions of ${}^{9}$Be from different perspectives, \textit{i.e.}, the antisymmetrized molecular dynamics and the container pictures of cluster dynamics. These pictures are represented by two different well-proven microscopic models, the antisymmetrized molecular dynamics (AMD) and Tohsaki-Horiuchi-Schuck-Röpke (THSR) wave functions. The corresponding reduced width amplitudes (RWAs) in the $^{8}$Be$+n$ channel are extracted from both the AMD and THSR wave functions, and they are found to describe drastically different valence-nucleon motion, which shows the theoretical ambiguity in describing the $π$-orbitals in $^{9}$Be. Using the RWAs as input, the physical observables of the ${}^{9}$Be($p,pn$)${}^{8}$Be knockout reaction are predicted by the distorted-wave impulse approximation (DWIA) framework. The magnitudes of the triple-differential cross sections (TDX) are found to be highly sensitive to the RWA input. It is concluded that the ${}^{9}$Be($p,pn$)${}^{8}$Be knockout reaction could provide a feasible probing for the subtle differences between several structure models manifesting through the spatial extension of the $π$-orbital in the $^{9}$Be nucleus.
