论文标题
具有$α$+$^{48} $ ca群集结构的较高节点频段状态的存在$^{52} $ ti
Existence of higher nodal band states with $α$+$^{48}$Ca cluster structure in $^{52}$Ti
论文作者
论文摘要
结果表明，最近观察到的$α$群集在$^{52} $ ti中的$α$阈值能量上方几mEV表示对应于具有$α$ a $+$+$+$^{48} $ ca群集结构的较高的淋巴结频段状态，即一种振动模式，其中集群相对运动是一种振动。除了$^{20} $ ne中众所周知的高节点状态外，$^{48} $ CA核心区域中较高的鼻状状态的存在以及$^{44} $ ti增强了振动运动概念的重要性，即使在中等重量的nuclei和$ jj $ jj $ -shell封闭的核心中，振动运动的概念也是如此。 $^{52} $ ti中的较高的淋巴结和类似贝壳的地面带被统一的方式描述了luneburg镜头，因为Pauli原理，像Pauli原理一样，在低能量和核能上，在低能量和核雨水中，向后角度异常（异常大角度散射（Alas）解释了向后角异常的出现（异常大角度散射（Alas）） $α$+$^{48} $ ca散射。不可避免地预测，$ k = 0^ - $ $ $ $ $ cLuster band band类似于$^{44} $ ti中间之间的中途。
It is shown that recently observed $α$ cluster states a few MeV above the $α$ threshold energy in $^{52}$Ti correspond to the higher nodal band states with the $α$+$^{48}$Ca cluster structure, i.e. a vibrational mode in which the intercluster relative motion is excited. The existence of the higher nodal states in the $^{48}$Ca core region in addition to the well-known higher nodal states in $^{20}$Ne and $^{44}$Ti reinforces the importance of the concept of vibrational motion due to clustering even in medium-weight nuclei with a $jj$-shell closed core. The higher nodal band and the shell-like ground band in $^{52}$Ti are described in a unified way by a Luneburg lens-like deep local potential due to the Pauli principle, which explains the emergence of backward angle anomaly (anomalous large angle scattering (ALAS)) at low energies, prerainbows at intermediate energies and nuclear rainbows at high energies in $α$+$^{48}$Ca scattering. The existence of a $K=0^-$ $α$ cluster band analog to $^{44}$Ti midway between the ground band and the higher nodal band is inevitably predicted.
